I pulled out my distributor to replace the manifold and all went well until I tried to put the distributor back in. it seemed like it was about 1/2 inch from sitting flush with the manifold. do I just need to jiggle it and force it or am I missing something. also, is there anything special I need to do when I put the distributor back in? or should everything be good to go? thanks. by the way the manifold was a holley tbi manifold for a GM.