i am real close now , its just when i do a cold start i hear them ,, i will drive it a little and re adjust them ,, 1 other thing right now when hot driving at 180 to 170 temp my oil pressure is 40+ driving ,, but at light it drops to 25 is that ok?? got me worried but as soon i get on the gas it jumps to 40 again ,, the idle is about 500 to 700 rpm just guessing no way to tell ,,

thanks

1958 chevy biscayne
235 6 cyl 1 barrel
2 speed PG tranny