Sorry if this reply is repeated, I submitted twice but could not see my reply.
I also have this problem. Stellarmate, connected via USB to MiniUSB into the bottom of the hand controller of a NexStar Evolution mount. In Stellarmate I read that for an Evolution mount I should use the newer Celestron AUX driver, this seems to work fine for driving the mount, but I cannot see the Celestron SCT Focuser anywhere. I am at a bit of a loss, any advise would be much appreciated.