I just installed a Dr.D 8oz. flywheel weight on my '04 450 and now the damn thing won't crank. I installed a lighter one last year and didn't have any trouble starting it afterwards. I kicked the piss out of it for several minutes using the same starting procedure I've always used and it would'nt even fire off, all it would do is sorta stumble like it wanted to try to fire. I thought maybe I fouled the plug and just did'nt realize it so I pulled the plug and it was wet with gas, so I chunked it and put in a new one and tried it again with the same results. I even put in one more plug in and still nothing. So being already pissed off into a rage I tried pull starting it behind my truck and the bastard still wouldn't even fire off, it would just pop when I gave it a little gas. I need help before I take a shotgun a hold of this piece of shit.