I converted my 09 yz 450 to a 09 wr 450 my changing crank wr wiseco, stock wr flywheel, trail tech stator and regulator and small battery, wr sidecover, wr wireing harness, wr sifter, dynatek cdi, how cams stage 1 yz cams wiseco hi compression piston, wr netural switch. Ok the bike starts but its very hard to start. When idleing is sounds great but as soon as you give it alittle gas is cuts out and backfires. The head light i bought and wired up to the tusk lighting kit is very dim when u give it gas it gets dimmer. The clutch arm hits the starter housing. Anyone done one of these conversions? Also i have to small black wires going into one plug back by the battery dont have a clue what its for. Is the timing different on a wr to yz?