A friend bought one for his 9.25" Edge and found out it is not compatible with the 0.7X focal reducer. He contacted Celestron support and this is their reply - seems like a pretty reasonable reply from them, so long as you forgive the original error and not thoroughly testing the device in all configurations. Perhaps others may want to see if Celestron can provide the same option instead of trying to fix it themselves.
Mine is on back order, but is for my 14" Edge so I should not have a problem with that.
"Thank you for your e-mail to Celestron.
It has come to our attention that the Celestron Focus Motor is not compatible with certain combinations. One of those combinations being that with the Celestron 2" 0.7 reducer and the 9.25" SCT Edge HD.
Unfortunately, there is no workaround for this issue. We sincerely apologize for any inconvenience this may have caused.
Our Product Development Team is working hard to address this concern and will be releasing a new focus motor mid this year. This new design will offer better compatibility across all Celestron’s optical tubes and accessories and will be guaranteed to work with the EdgeHD 925 .7x Focal Reducer combination.
We understand that this may be disappointing and we are happy to offer a RMA so that you can return your existing focus motor to us for a full refund. At the same time, I can also place an order for the new focus motor on your behalf. This way, you will be at the front of the line to receive the new motor as soon as it becomes available.
If you’d like to go this route, we will send you a prepaid shipping label immediately. You can either return the focus motor to us now or wait a few months and continue using it with your 9.25” EdgeHD optical tube (without the reducer lens) while the switch is taking place. Either way, as soon as your RMA arrives at Celestron, we will issue your refund. When the updated focus motor ships out, your card will be charged for the new unit.
Of course, if you prefer to return the unit to us now for a refund and not place an order today, I can take care of that as well. Please let me know which option you’d prefer.
We appreciate your continued interest and support our products and look forward to hearing from you soon.
Celestron Technical Support"