Ordering parts

Has anyone tried to order more than one of one item from the Solidoodle site? I can't seem to be able to order 2 nozzles. After I update the quantity in my shopping cart, on checkout it reverts back to one. Also, the site seems incapable of dealing with two lines of address for mailing. They have the spots for them in our account profile, but when going to order, only one line of the address shows up. We must have our company name in the address, or the post office will not know what floor of the building to deliver to.