okay,i got all my upgrade parts for my tornado bb pro.which was the clutch bell 2 gears,and tax.spring after i got it all together,the motor would not sit in right.and i saw that the gears are hitting something like a stablelizer bar.that you screw the top plate onto. i was told by someone on here that i would not have to change the spur gears.but the papers that came with the gears,said i would have to use a differnt spur gear or something like that.i noticed the gear that was gold is a little bigger than the orginal clutch bell gear. i will try to upload a couple of pics i took but not sure how but if you see the pics it's the black thing at the tip of the screw driver that it's hitting,so i'm at a stand still so please help. tony[img][/img]