Installed a new "ultra-case" Strange center section. Using existing strange 40 spline axles.\n \nAxles go into the new spool about 1\/2" and very tough get in further. Been hitting it with a wooden mallet. Not making it move much. Does it really need a good beating to get it in? Like a sledge?\n \nI don't think there is a mis-match in the axle\/spool as it's all strange stuff.