Thanks guys , I had originally intended to get the base of the QCTP ground back a tad, but on reflection realised it would make the foot print of the QCTP smaller and that could upset the fantastic rigidity that the bigger base QCTP gives .
So , I've been contemplating.........was enough there meat for me to make a full QCTP rotation grind out ?
I must confess until I read this thread I've not thought of using my drill press and a high speed CTC woodwork router cutter to dry mill and mill off the unwanted metal. But as it is very soft cast iron I'll give it a whirl dry , on a slower speed and also make the removal a few thou deeper than needed . This is to give a permanent clearance as I can't stand at the bench and file accurately these days due to an end of life spinal problem over taking me.
Does any one foresee any probs milling off a few thou at a time dry or should I go for the can of WD40 method ?