I have the new flywheel for my 04 Eiger 400. For some reason I can not get the thing to go on the shaft properly. It seems as if it needs to go up another quarter inch or so. I have my impact wrench give it all it has and it just will not go all the way on. When I take the bolt off, the flywheel just comes off easy as can be. The carter key looks to be in the proper location but I am not sure if it is the problem or not. My impact wrench might not be strong enough. What is the torque pressure to install the flywheel? Any help would be appreciated. Thanks.