Hi Andy,
Ummm, I dunno (sorry, dumb answer
). It is always like that?
I don't use PHD for alignment procedure, apart from watching the drift when I turn off the guiding and adjust the Alt/Az screws on the HEQ5 using a meridian star and one in the east as low as I can go, etc.
I may take a look at this next time out and see what it does.
Chris