Thank you for adding the feature to save the custom guide rate. I just updated the firmware and will test it tonight.
Also, I was just playing with the 1.3 firmware and ASCOM 6.5.16. When I check the Tracking box, the green light turns on. When I click the red STOP button, the green light is still on. What's the intended behavior for the red Stop button, just to stop a slew/goto, but leave tracking active?