I have recently received a new A//P Mach2 GTO which is specified to guide at 1x siderial rate.
So far I have not found the guiding rate of the ASIair to be anything other than .5 siderial.
Also It took me quite a while to discover the proper connection setting for the Mach2 mount is not the setting that would appear to be the one most likely " Astro Physics CP3 & CP4 " which it doesn't connect with.
It does however immediately connect to the setting named " Astro Physics CP2 "
It would help owners of the A/P Mach2 mount if the " Astro Physics CP2 " named setting file where changed to include the " CP5 " after the CP2.