I had problems with a 110. It is in the Synergy 90 3d. I have 3 x 63’s with no problems what so ever.
The symptoms were:
1. Engine ran hard after 4 mins of flight and stopped
2. The engine would stop at middle range setting About 3500 rpm
3. top end was erratic
4. Idle spot on
The problems were chased down to:

Cooling. The rear of the cowl was opened up. The slot for pipe exit was extended to twice its length. All the exit holes were enlarged.

Bad return valve. Although it was tight, there was a small air leak. This messed up the mid range as the pressurisation was down. Sign is that there is fuel in the return pipe.

Fuel starting to go off. This caused the top end problems Using 20/20

This was enough to get the engine working properly. Also it was very tight. Now it has had about 1 gallon though it, it seems to be more powerful smoother and runs cooler.

Kris