So this one is gonna take a little bit to explain, I apologize. I have a 1960 xlch, I am currently reassembling the clutch and primary, when I took it off everything was working fine, now that I'm putting it back on, not so much. My problem is when I attach the front sprocket and clutch hub with the primary chain and bolt it all in I can not move the chain, its as if its locked, can't get the pistons to budge. When the chain is off, the front sprocket moves easily with a wrench moving the pistons. The clutch hub spins freely also when chain is off. I also can not use the kickstart to turn it over. The engine is on my bench in basement, not connected, no sparkplugs. What could be causing this to lock up? Thanks.