[jhautz]

To get the flywheel off of the nitro engine you just need to make sure the nut is off of the main shaft and then give the back of the flywheel a little whack or 2 with a plastic handle of a screwdrver and it should pop off. There is a taper bushing that it fits onto that holds it in place so tight. Aall it takes is to just budge it and then it comes right off.

Can't help you on the tight screw part... I dont have the Tekno kit.