I just bought recently bought a 3.8 motor from qfm... and for sum reason it was going slower after my frens were messing with my car, the takeoff speed wasnt all that great... but it has good top speed, but after my friends messed with it.. i dunno wut they did to it but it went a lot slower, so trying to fix it i was messing with the little metal clip thing on the end of the motor b/c i thought the end wasnt touching the metal part.. but i kinda broke it off.. then trying to solder it back together i melted the plastic part and pretty much given up on the motor... so i want to buy a new 3.8 motor.. but where should i get it from? im thinking either tinyrc or qfm.. but do u guys know which one runs faster? or are they both the same? any help would b appreciated =)