Op. Thanks again Doug, I’ve printed off both references you pointed to. Finally quit storming so got to crawl under. Sprayed all friction points with PB blaster. Well watcha know, it works now, but don’t know if the spray was just a make me feel good action. Wiggling it didn’t seem to be bound up anywhere. Posts above mention a roller bearing. Hard to see/feel around but didn’t see anything that looked like a bearing. There is a stout rod with circlips on both ends that the unit pivots on. Is that the bearing? Now this part is confusing to me:
LF MOD #12447. RF MOD AP7164
LR. Ap7164. RR. 12447
SPRINGS HAVE 49 COILS.
funny to me the opposite corners model numbers match. What would be the reason for that? So good to go for now, thanks for responses.