Could also be the terminals touching the heatsink. As soon as I got my 2- v3's in I checked for clearance. Both had terminals that were touching and both had a small section of fan wire that was bare. I fixed both before using them.
FLM Extended Savage -Nue 1521 2d MMMv3 6cell E-Maxx -Flm Parts stock motors (the wife's) Slash -MM medusa 3300k 3cell 68 mph!
[B]Custom FLM Axial Crawler Losi Rammunition 1/184600k