I've tried to get them but I can't find any either.
If you can tell on the board where you think there is a problem, take a detailed picture, get the board rev and model number, and get as many component placement names as you can and email MTX. I did that for an old 2300x and they got back to me fairly quickly with the exact parts that I requested. They won't give a full schematic but they will help you out.