Does removal of Auto Pilot Servo's require putting the aircraft back into Phase I or II?
Normally any alteration to the control system will require a new 5 hr. phase I.
I have made my log entry showing the alterations to the airframe, should I note also that it is back in phase I and again when the 5 hours have been flown off?(I am a bit confused on flight hours vs hobbs in regard to what is required. I assume flight hours, yet I log hobbs in the airframe log. Perhaps I am overthinking this.)
I calculated my weight and balance based on my old cg (other post), before I flew, but I assume a complete new WB would be appropriate so I have my corrected cg?
I have made my log entry showing the alterations to the airframe, should I note also that it is back in phase I and again when the 5 hours have been flown off?
The exact procedure should be spelled out in your operating limitations. Yes, you will need to place the aircraft back into phase I with a logbook entry. When you have completed testing, you will use the same sign-off that you used to end your original phase I.