noisy in forward but not reverse?

[newblnc]

hey i was messing around with my lnc in the backyard with the young feller with his summit and we accidentally met up with the wheels spinning together. now after that i noticed that the truck is louder in forward but in reverse all is normal. everything works ok and i did tear down the front axle but didnt find anything wrong. any ideas of what it could be? using a titan 21t motor and stock esc.

[ghtpdm5]

like louder in the motor/trans area? if so throw a bit of dry graphite in the drive cups, mine started to get rough and pretty loud recently, and that solved it. take the pinion off the motor and spin the driveshafts by hand, if you hit a consistent rough spot in rotation, watch what the cup end of the shafts are doing. if they're moving sluggishly in the cups, thats most likely your problem. mine also did it worse in only 1 direction.