Bob,

Just indicate on the fixed jaw of the vise.

I have a good opportunity to try that, because I did some more work on
the collet chuck box and the vise was in the way. I think I tried the
fixed jaw and went to the parallels hoping for better results, in part
on the theory that clamping the vise makes the conditions as close as
possible to having a part in the vise.

I'll give it a try and report back. Thanks!

Bill