Hey guys I built a non hemi predator 212 last year it has a black mamba sr cam, billet lifters, cm pushrods, 26 lb springs, billet rod +.40, hemi flat top piston, rtc 6 head sanded down around .40 and ported by me (kinda overdid it), 24 mm carb and arc flywheel with built in advance. The motor runs great a little weaker on the low end but lots of top end. The revisions I wanted to do is try some stronger springs maybe 37 lbs to fix valve float, maybe sand the head some more for more compression, and get some better bolts for the side cover because my home depot bolts are coming loose from running it hard and leaking oil. What are your guys opinions on the springs ( what size , retainers?) , and what bolts should I get? Thanks