Thanks Matt
I'm now waiting to take it outside and point the guidescope at a real star and try it again. I've replaced the serial guide cable and can hear the motors (very quietly) change pitch when I do the PHD "Ctrl-T" test that manually tests movement for 100 pulses or so in each N,S,E & W direction. If that works, then I guess my hardware is OK.
I still need to figure out what people use as a guide speed when calibrating... and then even more importantly how to change back to normal speed at the end of the calibration run.
