Well, I got the chance to adjust the valves, Everyone of them were out of tolerance. All the gaps were to small. Did a compression test after the adjustment and #4 came back up in family with the rest. #1= 128psi #2- 125psi #3=130psi #4=120 psi #5=123psi and #6 =125psi. I can assume #4 was so far out of whack the exhaust wasn't closing all the way. Any thoughts? Runs noticeably better and quieter. I think I'm going to get rid of the carb all the smog and get fuel injection (any recommendations), Then upgrade the distributor to the DUI, replace hoses or age worn out items, get new tires. It has an old man 2.5" lift and I'm thinking 33'' x 10.5 on the original 15" wheels then drive it like a stole it.