I have my G811 mount working perfectly with SGP through the Gemini ASCOM Driver. Except-
The park does not work properly. In fact when I ask it to park it tries to go under the mount!
The ASCOM Driver works perfectly and parks the scope as it should. I have set the arrow buttons in SGP so they match the directions in the Gemini Ascom. I park the mount in the CWD position, then ask SGP to SET this as the park. If I then slew with the arrows in SGP that works fine, but when I ask it to park it goes past the stop and keeps going way past the horizontal. How far it would go I don’t know because I stop it to prevent damage.
Other users of SGP with Losmandy mounts tell me theirs do the same.