Ok, so it's on one side, I would now look closely atI put a 4' level on it.. noting the bubble positions. With the bucket lowered (on ground).. they are very close. When the bucket is raised, it goes out of level noticeably at the top pivot point nearest to operators platform. This is where it pivots on the frame bracket. One side moves higher, the bubble level is noticeably changed, and would explain the difference I am seeing.The bolts appear to be snug, I torqued them a while back with no movement noted... but maybe my torque wrench isn't up to snuff.
I'm going to try to observe any movement visually on that frame bracket when the bucket is raised.
Blue-frame mount, Green-lower pin, Purple-cylinder mount,
White-locking pin and Maroon-Upper pin (pivot)
Sometimes the frame mount and lower pin don't get engaged correctly and sometimes the locking pin isn't really locked. Let's look for the easy stuff first