Asimov, I know you have been trhough a few iterations before geting it right. Given your intrest in Equatorial Mounts. Here is a link i came accross that may intrest you and the others. I have collected quiet a few designs in my umm research.
$75 US cost for materials. Plans available by email. It looks pretty easy for a tinkerer like you tot put together.
http://www.charm.net/~jriley/sky/mount1.html
And the Eye of the Newt...
http://www.cloudynights.com/item.php?item_id=1072
Some ideas for you all to toss over.