Update:
Mark - Are you using a GSO 10" on a CGEM? I read somewhere that using an EQ6 or CGEM for RC10 CF is also possible as long as a very light weight guide scope is used.[/QUOTE]
I tried it out and it is possible but I had trouble guiding toward zenith
the weight was starting to show and was responding erratically to
guide commands I use an OAG no guide scope. Otherwise it seems to cope ok just depends on the angle and weight balance . I now have a Mach1
it doesnt break a sweat with it.