Gary
I am lucky to have a relative who happens to be a generous & very highly trained CNC technician. He adjusted the axis lag on my Dynapath 20 control. It was explained to me in a 'horse & carriage' analogy, but think of the connection between them as a rubber-band: The control & servo is the horse; the carriage is the table. The delay in postition between where the control is & where the table following it *actually* is should be zero, ideally.
Here's what he did:
1) Go to Mode select...5....(Setup).....enter
choose TM4 ....Servo Adj....enter
Now go back to Mode...0 ....enter
On the display (ideally) you should now see this:
Axis Lag
X +000.0000
Y +000.0000
Z +000.0000
(but your display probably will *not* show zeros....that's why I'm writing this.....that's what you're trying to do)
2) Open the big control box and find the servo-amplifier boards....they might even be labeled. You MUST find the X & Y & Z. Hint: there are 6 tiny adjuster-pots on the edge of each board. The voltages here are quite low...so you won't get a shock BUT cover the open terminals of the transformers if you're clumsy &/or nervous. I dropped a screwdiver on these once...a near miss....almost shorted-out the transformer)
Find the pot marked 'Bal' for balance.
3) While a friend, associate, wife, or other trustworthy person observes the display, particularly the Axis Lag numbers, you are down on your knees with your nose close to the servo-amp boards: Tweak the 'Bal' pot on, say, the X-axis. Ask what change in the display...a higher number? Then tweak the other direction. Have your friend report any changes. When the value gets to zero....Stop. This means there is no lag now on this axis.
Now adjust the Y-axis the same way as X. Then do the Z-axis.
That's it. Done. I was told that this value may drift with seasonal shifts in temperature. Check every so often.
Now *REMEMBER TO SET THE CONTROL BACK TO 'TM1'.... Feedrate over-ride.
Hope this helps.