Today i had the same issue about unwanted rolling action after activating fm2.
I have to say that i have already good expirience wit the Mercury srs and it did its job all the time right. Untill today. As i switched it to fm2 it started to toumble over the ailerons from the left to the right and back, until it started to turn in a hard, continuous rollover to the ground. The only way to rescue the model was to switch back to fm1 immediately.
I fly with jeti and did not recognize any warnig for signal loss. As i landed, i rechecked the acting direction of the control surfaces in fm2. Nothing seemed to be wrong. Then i reinitialized the gyro thru testfly assistant and checked all directions again. In all test flights, allways the same result. Unwanted unending rollover. There is to say, to not risk my plane in the near of the ground, i had to preset the testfly assistant on the ground to a known parameter like 30% gain. To be able to test the new initalisation in a secure altitude. In my case, there is no turbine near the Mercury srs. Its a conventional electric powered prop plane and it did many flights with no issues within gyro usage before, in the same configuration.
Maybe you have allready solved that problem this time?
In will do further tests like reset the hole pb and check failsafe and hold logs and so on.
One more question: is there a possibility of wearing the gyro thru vibrations and hits in normal day use?
But anyway many thanks for response
has your problem been solved since then?
As it's a "conventional electric powered prop plane", I would be happy to know if it's potential trouble for any mercury, or if it's just a failed unit that needs repair, as it could be possible on any other electronic device.
PS: I received the protection foam for the mercury. Many thanks Richard!