Frankenmill: Bridgeport J head onto Victoria U2

[Dr Stan]

Good job on figuring out how much to shim the plate while it was on the surface grinder.  One aspect you probably forgot is the the ability of the magnet to warp the part when it is turned on.  That's probably where the remaining little bit of out of tram you're experiencing comes from.  The next time you remove the head from the mill check the plate for flatness and I suspect you'll find a little bit of of a concave feature on the surface you ground last.

Please don't consider this a criticism, as I think you're doing one #ell of a job.