Aside from the bed platform and frame, everything is replaceable on a Solidoodle. So don't give up hope.

I'm currently rehabbing an SD3 that had severe Y issues, so I am very fresh on the fixes depending on the cause. What issues are you facing?
Skipping?
Shifting?
Poor belt tension?
Grinding noise?

You do not want to replace your Y bushings for a few reasons.
1) Solidoodle glues their bushings into the carriages. This would require you to either upgrade to Lawsy's carriages (highly recommended) or buying an old carriage off another user (which I have)
2) Bushings will never perform as well as linear bearings
3) Your cause is more than likely the Y brackets wobbling, belts stretching at the holes where they mount to the carriages, Y drive belt (connected to the motor in back) has too much lash/not enough tension, pulleys along the Y drive rod (6mm) are not snug but do not overtighten the grub screws!, or gouged rods. I've seen the cause more of an issue on linear bearings than bushings though, gantry is not square, Y motor VREF needs adjustment, poor/no lubrication. For bushings, use white lithium grease, for linear bearings, use sewing machine oil.

In regards to #3, I diagnosed the issues to the aforementioned machine within 15 minutes of opening the box. If you have all required parts, it would only take about an hour to fix all problems I mentioned if all were the cause. Which, in my case, they are and I do not.
Point is, be more specific. Don't be afraid to upload pictures of what you are facing. You may want to start a new thread in the Help section of the forum for the proper attention.

Thanks again.  My issue seams to be with short-throw movements.  For instance, I can print a perfect 5" ring, but  trying to print a 2" cube is where things mess up.  A few passed go well, then a "popping" noise happens.  From there, each layer is a couple MM off from the last.  Here's the thread on my issue. I have seemingly exhausted all the good advise so far, and still no luck.  That's why I was thinking about replacement parts at this point.

http://www.soliforum.com/topic/11635/so … gskipping/

I'm currently rehabbing an SD3 that had severe Y issues, so I am very fresh on the fixes depending on the cause. What issues are you facing?
Skipping?
Shifting?
Poor belt tension?
Grinding noise?

You do not want to replace your Y bushings for a few reasons.
1) Solidoodle glues their bushings into the carriages. This would require you to either upgrade to Lawsy's carriages (highly recommended) or buying an old carriage off another user (which I have)
2) Bushings will never perform as well as linear bearings
3) Your cause is more than likely the Y brackets wobbling, belts stretching at the holes where they mount to the carriages, Y drive belt (connected to the motor in back) has too much lash/not enough tension, pulleys along the Y drive rod (6mm) are not snug but do not overtighten the grub screws!, or gouged rods. I've seen the cause more of an issue on linear bearings than bushings though, gantry is not square, Y motor VREF needs adjustment, poor/no lubrication. For bushings, use white lithium grease, for linear bearings, use sewing machine oil.

In regards to #3, I diagnosed the issues to the aforementioned machine within 15 minutes of opening the box. If you have all required parts, it would only take about an hour to fix all problems I mentioned if all were the cause. Which, in my case, they are and I do not.
Point is, be more specific. Don't be afraid to upload pictures of what you are facing. You may want to start a new thread in the Help section of the forum for the proper attention.

Those are bronze bushings. I have some lying around depending which and how many you need.
What rod are you trying to use them on?

Thanks! All my equipment is stock from the original factory shipment. My machine was working as good as they can work for about 1.5 years. It then crapped out on me. I have a crazy Y-axis issue that I can't seem to get rid of no matter how detailed I get with tune ups. I just figured I'd replace all the parts that can get worn on the Y-Axis, and replace all the belts while I'm at it. This is a last ditch effort before I start thinking about replacement.

The SD2 does not come stock with bearings. Did you mean bushings?
Remember the SD2 has MXL belts... GT2 so if you wanted to upgrade belts, this would be a perfect time. Makerfarm.com sells most of what you are looking for and I've never had a bad experience with them. If you wanted to upgrade to the Lawsy carriages, I do believe they also sell LM8UU bearings.

If you need parts printed while your machine is down, just make a post and someone usually PMs quickly to help out.

Truth be told, I'm not sure what I mean.  I know I need some of these, but I would have personally called them bushings. They call them bearings.
http://www.solidoodle.com/parts/parts-S … aring-pack

If you need parts printed while your machine is down, just make a post and someone usually PMs quickly to help out.

No employees of solidoodle have been active on this site for a rather long time.
What parts do you need?  There's a very good chance you can find better and cheaper replacement parts from other sources.

Thanks for the reply. Solidoodle should be paying you for all your community help! 

I was looking for SD2 pulleys, bearings/sleeves, and brackets. I guess I'll look elsewhere and charge back that order.