I finally fired up the 5.7 in the '85 pickup. Runs well, but cylinders 1,4,6 & 7 are dead at an idle. My best guess is that I installed MDS lifters without looking at what I was installing. Does anyone know if I can just drop in a set of MDS solenoids in order to get it to fire on all 8? I really don't want to pull the heads and swap lifters if I don't have to. Engine is a '05 5.7, running an SRT cam with Eagle heads. Block has plastic plugs in the MDS holes right now.