I also ran a bosscat slipper in my procat with an 8.5T brushless and lipo indoors on carpet and found the weak point to be the tooth pitch of the belts and diffs. I did get a price to have some new MMS style diffs machined but lost my way with it some what and it is now on the back burner. Thread here if anyone is interested:
http://forum.racing-cars.com/forum_p...20-years-later