Losmandy G-11 saddle plate, will fit on G-11 or GM8 mount. $90 shipped. (new price $105 + shipping). Will also sell custom-made aluminum adapter plate that allows you to mount the G-11 saddle to a GP dovetail, so your CG5/GP-type mount can use G-11 OTAs. $20.
Let me know if you have any other questions. Thanks,
I'm selling this OTA because my GP-DX mount with SkySensor was stolen a few weeks ago (grrr...). I considered replacing the mount, but eventually decided to sell the rest of my stuff instead. See my other ads for C9.25 OTA and various GP accessories; $5 discount per additional item ordered. Also, if you need random GP-DX fittings (plastic knobs, gears, plastic motor cover, manuals) let me know; if it's something I've got, I'll sell it to you for just shipping costs.