Bugger. Thanks for the advice, Bill and Simon.
Bill - I read in that thread you linked to about another issue I found last night. Hopefully it will be fixed in a firmware update.
http://www.iceinspace.com.au/forum/s...34&postcount=9
This comment relates to how the mount moves back-and-forth ever-so-slightly when slewing to an object, ultimately failing to slew accurately.
Thanks again.