HI, I have a Warco WM18 mill, similar to the Grizzly 0704. When tramming up the head I find the quill lock tilts the spindle by about .001". In the past I'm sure I saw a modification for the quill lock that overcomes this but all I can find is spindle locks which are a different thing.
Tramming the head without the using the quill lock but with different extensions using the fine feed results in consistent readings. I could tram the head with the quill locked but this gives different readings depending on how tight the lock is.
Any suggestions please?