Lathe manual tool changing

Hi all,

after a quite succesful conversion of my lathe to CNC / TurboCNC, I'm
now dealing with the problem of tool changing. My 4-way toolposts are
not precise enough, with a positioning error of +-0.1mm, way too high.

I'm looking at comercial (manual) quick change tool posts, and wonder
how precise they are.

The toolposts I'm looking at are those with a dovetail, piston type
or whatever, and cost in the $100 - $150 range.

My lathe is in the 8" range.

Any advise? Will this QCT work? Has anyone devised other simpler
solution?

Thanks in advance!

jaime