Thank you for your reply Sam. Removing the .7 reducer from the optical path will be a good experiment. I will perform this experiment. However, I purchased the .7 reducer for an obvious reason. This reason for this purchase persists and I will not consider it an acceptable outcome to not be able to use the .7 reducer.
I also understand that this known issue is not fully under your control, as the Panasonic sensor is manufactured primarily for non-Astrophotography purposes so does not have the anti-reflective coating. Your company does not have the volume of purchases to demand the the sensor manufacturer add such a coating to the sensor. I also understand that other Astronomy camera manufactures have the same issue. I have also heard that whether these reflection problems present themselves is highly dependent upon the exact nature of the optical train. The best we can do is to try to understand this better.
This forum is a good place to exchange this information. I will do some experiments to try to debug my specific setup, and will publish anything I find here. I would appreciate it if your company could look into this problem further, and publish findings, so as to better advise the users on how to deal with the reflections issue.
thanks for your understanding
you are absolutely right