Pete,
I would have thought that if you want to use tpoint to correct your pointing accuracy then you should turn off the eqmod model and connect maxim to the sky not to the mount. I know you can do that with sky6 but not sure about skyx.
I figure that once the tpoint model is done, it will send the mount to an altered ra/dec which compensates for errors. Connecting maxim to the mount means maxim will read ra/dec from the mount which may well be off.
[edit]
Looks like there is a skyx driver. 3 from the bottom of
this page.