Hi all.

I've got a Clarke CL300 with a dodgy tailstock.

Ever since I've had it I've not been able to drill a hole reasonably accurately.

Lately, I've stripped the tailstock down to component parts and have been playing with them to find the problem.

It would seem that the base of the tailstock didn't sit on the ways particularly well and wobbled like a rocking horse.
I've since used a white board marker and a file on the ways to see where the high spots are and filed them out so that the base of the tailstock sits nicely on the bed.

The problem now is, with just the tailstock base tightened down to the ways and a DTI stroked across the top mating face of the base gives me a difference of 1mm in height from one side to the other!

I would like to know how I can possibly level out this tailstock base so that when I tighten the tailstock down, it actually tightens DOWN rather than at an angle.

Any ideas?