lifter trouble

cranked er up to pull it in the garage tonight to change intakes ticking loud figured i' check the rockers and all since swaping intakes anyway number 3 cyld. rocker real loose pulled rockers bottom of lifter looks like it's been beat with hammer oneside is 1/4 inch shorter like wore it an angle found 2 more thats wearing at an angle not nearly as bad anyway this motor only has 30 miles on it new kb167 pistons 0.40.bore zerodecked new compcam 230/480 @ 50 got the heads from areoheads told em my specs. suppoese to be 318 castings 202 vavles they have large ports like 4barll. heads i'm thinking they sent me 360 heads they grind casting numbers off the machine shop that milled my blocked said stock pushrods would work there not bent i've put some money on this motor what could it be i broke the cam in i'm scared to replace the cam and lifters in fear of it doing it again 60 mile motor 2 cams help i built my sons 360 put an lunati 494 lift cam in it used stock rockers an pushrods 5 years ago still runs good i'm thinking the milling or the heads are throwing somthing out of whack :cussing: