I never gave it a thought that the rocker arms are not adjustable. Can I do a light valve grinding compound to the valves? I am going to take all them out to clean them and put new seals in them. All the seals are cracked into little pieces. I dont have the money to have someone redo the heads for me. I am concerned that if I compound the valves then the rockers wont let the valves close. Should I leave the other valves alone? How do I check to see if the valves will seat properly and not hang open a little? Thanx for the info guys!!!!