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]

With some vehicles when you change the gear ratios the pinion gears are either too large or too small for the original spur gear so an upgrade to the spur gear is required. Look sl ike that's what you've got here.

The multi colors look cool thou.... Hope you get it figured out

Depending on how much material you need to remove, you could also grind away the area that is hitting the pinion.

hay, thanks for the reply ya i supose ill need order the spurs. are thay very hard to change can thay be a pain

ya i thought about that but dont want to weaken any thing lol. thanks