Not very common with the warrior. Did you replace the gear and the oneway? If you replaced both, you may have to look elsewhere. DOes the engine kick back into the starter alot? Could be a timing issue. Do you kill it often and start it in gear? This is said to be hard on the one way. Maybe your starter is getting weak and not keeping the oneway engaged during cranking..
01' Raptor 720, Stage 2, FCR'd
97' 250 Vitos Blaster - Big Bore Stroker
85' Tri-Z - YZ PV, Pipe = Stupid
94' Banshee T-5's, Vforce, ported, Cool HEad, 2-1
06' Wolverine - Stock!
06' Rhino 450
06' LTZ 440