When my motor is warm I hear noisy rocker arms, so last night I warmed up the motor and immediatley removed the valve cover, I couldn't budge some of the rockers however some moved around very freely with a lot of slop. I rotated the engine and some seemed to tighten up however some still seemed loose. SHould there be anymovement of the rockers after being adjusted. I have fully adjustable rail rockers (68MY) and when I installed the rockers I tightened the rockers until there was no up & down movement of the the pushrod to rocker and the piston on the lifter wasn't compressed at all. Once I reached that point I turned the nut 1/2 turn which moved the piston down in the lifter. After I fired the motor for the first time, the rockers seemd noisy so I adjusted each rocker an additional 1/4 turn (3/4 turn total). The noise at cold went away hoever when warm the nois is still there. Shall I go another 1/4 turn? All the books I read say to only go 1/2 to 3/4. What am I doing wrong? Also I have about 40psi of oil pressure at idle when warm, so I don't thing the lifters are collasping due to lack of oil pressure.