really easy to fix , ha ha,
I had to really loosen all 4 axis - the whole assembly rolling all over the place - had to secure with a few clamps and square it… - i had to loosen the lead screw drive collar as it was applying torsion against the screw when it was square. I think it i got it back together pretty well. I do notice now, that bearings are tracking flat on the gantry and leaving new full width tracks on the gantry… Before, the bearings were riding on edge – leaving just a single line track on the gantry… Over all the x axis travel is a good bit less noisy than before the squaring… However, i am left with some very faint harmonic thumping in the travel. Maybe dirt in a bearing ? any ideas - its not severe… but there is a light harmonic thumping during travel yet a good bit less noisy than it was.