Acquired one of these recently. Getting it cleaned up for use - always wanted a turret press. Anyways…. Does the big bolt on top need to be loosened before rotating turret or is something amiss? Seems there should be a flat bushing or washer somewhere in the assembly. The ball bearing and spring are there but maybe I need a new spring..? Also, do the linkage pins simply tap out? Also missing primer post but I’ve read one can turn one on a lathe from a bolt. Maybe someone has an exploded diagram or advice to share.