[racingdwarf]

Yes remove the collet,its quite simple to do, just open it up a little with a small flat blade screwdriver then gently work it off.BUT I have also been reading the other posts in the nitro section that are also asking about the make of clutch you are trying to fit. As a general rule with rallyx it good to use the chassis manufacturers clutch on the car,so if its kyosho, use a kyosho clutch etc as they are all different, if the clutch you have is for a different car,or aftermarket there is a good chance it just won't fit, looking at the photos your clutch looks a mile out, you normally only have to shim some fine adjustments 2mm etc, you look like you need to find 5-6mm
Also the flywheel looks nice and central to the hole for the starter wheel,were it should be, if you manage to shim it all the way forward to get mesh I think the flywheel will be well off central to the chassis hole

It really is a good idea to keep a rallyx car uncomplicated to get reliability, if this is your 1st,get a kyosho clutch as your life will be so much easier:thumbs: the clutch is one of the hardest working parts of the car if you try a botch job ten times out of ten it will let you down!

Hope Ive been some help