I just purchased the traxxas brushless system and had the local hobby shop install everything. Got it home and ran it in the backyard for maybe 10 minutes and it stopped driving. Took the spur cover and everything but the wheels were spinning. The wheels were actually turning very slowly. When the shop turned the car back to me he said it sounded like the tranny might be dry but shouldn't pose a problem. I both tightened and loosened the slipper which made the spur turn faster or slower but no effect on the speed the wheels turned, which was hardly anything.
If I need to rebuild the tranny is there anything I should do to upgade given that it's now a brushless. Originally this was a 5805 model. I've replaced tires to badlands and the gearing is 18x90 now. Also installed big bore shocks after breaking a couple of shock rods in the past.