Replacement SD X carriage .stl??

Searched Thingiverse...nothing.
Searched Soliforum...nothing.

I am not yet prepared (or confident enough) to upgrade to Lawsy's carriages. And the upper register of my X carriage (the thin part the Nema sits above) has wallowed out due to the 4-40 bolts wiggling little by little over time. While swapping out mk5s and examining my SD2 to figure out why I have been getting more and more wobbling, I found that the front end of the carriage's top printed part's bolt hole had doubled in size.
All I need is an stl for the stock carriage.

Can anyone point me in the right direction?
Thanks in advance, and sorry if this thread is in the wrong category!