[clyde72]

thanks for the replies, I didnt mention the rockers appear to be moving the same, i guess its time to look at them closer, there is valve train (lifter?) noise because, as I mentioned I have them pretty loose, a local old motorhead said to try that, I have had them tighter.
Interesting that you mention the 1 and four are on the same carb port, the problem did get worse after I removed the carb to replace the gasket because there was a vacuum leak, one of the many times I was sure I found the problem, it only had a slight skip before that. As mentioned Ive taken the carb apart and spray cleaned it but honestly I dont know enough about them to spot anything wrong. I, had my hands on new edelbrocks at Oreillys a couple times but hesitant because nothing else has worked and theres a 5.3 ls sitting in the corner waiting to go in but Im not ready for that project.
You have a good point also about the lifters, hadnt thought about the heavier oil thing
Havent quite figured out the picture posting thing...