new engine mount q's.

[Clavo106]

327 engine...c10 ..Bought some new engine mount at my local auto parts store. (Anchor) nothing was wrong with my old ones just had this engine off for a yr and was installing today with the new mounts.. my problem is that a line everthing up but the center bolt just get snug i try tightening some more then just releases. Is this norm? Its does this on both mounts... I just got it snug and throw in some lock tite. But thing I should replace them with the old ones...any idea s.