Hi Tweaky

Looking good but no pics of the Z, have you done that one yet? A honking plate? :naughty:

On mine the pin that stops the quill turning had raised a burr down one edge of the groove it runs in. You can't see it, you can't even feel it, but when you do the Z you may lock the quill orientation and move the burr out of the groove it has cut for itself. If you have the quill out, easy job, look for a groove on the inside of the housing by the guide pin. If there, assume a burr and stone it off.

Also, are you sure the spindle bearings are shot? l had a lot of clatter on the splined shaft and tried to fix it by liberal application of heavy grease, maybe a previous owner did the same to yours, it is an obvious fix :whistling:

The grease eventually found it's way down in to the spindle bearings causing them to run hot at top revs, same as you've got.

Might be worth running oil in at the top, with the spindle running, until it comes out oil coloured at the bottom. Changing that God awful original motor fixed most of the clatter for me, flushing the spindle bearings stopped the bearings running hot.

best regards

Robin