Hi,
Synscan have a V3.28 Beta firmware upgrade on their site
http://www.skywatcher.com/swtinc/cus...1=1&class2=101
which apparently does the procedure I have been trying to perfect. Aha

Essentially this involves doing a 2-star alignment, then slewing to a star near the meridian, and using the Alt-Az adjustments to centre it.
The Celestron All-Star feature is said to be the same.
http://www.celestron.com/astronomy/t...olar-alignment
Serendipity. Now to try it.
Cheers