HELP ! on Westamp servo drives.

I have a Tree Ultra Precision 1000 lathe that I have been using for about
one year. As long as I've had it, there has been overtravel (overshoot) in
both X and Z axis. This occurs only during rapids and then can produce an
overshoot of up to 0.1 " on the Z axis. Turning the federate override to 50
or 60 % stops this, but then my programs need to call out twice the required
feed rate for proper cutting. I believe that the servo amplifiers need
adjustment, but I don't have any information or schematics for these units.
They are Westamp Model #30060-25 and are operating on a 90VDC bus. There
are six multi-turn pots on the edge of the board labeled AUX, SIG, TAC, TC,
CLM and BAL. While several of these are a fairly easy guess as to function,
I'd really like to find some info such as tuning procedure and/or a
schematic, if available. I figured that with the many knowledgeable people
here, one or two of you must have had some experience with this or a similar
Westamp unit. Any help is appreciated. By the way, these units are about
1980 vintage.

Thanks in advance,

Ward M.

P.S. Hey Mariss, when will your new servo drives be available? I tried
the www.geckodrive.com site, but received a "Access Denied" error. The
www.geckodrives.com site worked OK, but doesn't have info on all your
products.