Hey everyone, Did a compression test today (eng. warm) and got 60 lbs.on all cyls.,added oil and got about 130 lbs.on 4 cyls. and about 90 lbs.on the others (#2 & #3 cyl.) Engine runs rough @ idle but no real smoking.Is it possible to do rings w/eng in truck.Any thoughts? I have to find serv.manual.Thanks in advance