How does one go about freeing up the stuck plungers in a linked roller lifter? I went to pop the clip out of the lifter bore from the top, but...there is a link bar rivet blocking the internals from coming out so that isn't going to happen. Very oddly, all the plungers on the 5-8 bank are stuck at the top most position. All but one on the 1-4 bank are a-ok and move just fine when you push on them with a pushrod.
Should I try to soak them in some sort of solvent? Gas? Something stronger?