I have the 110 in a ZNline Synergy 90. When first installed and new I had a lot of coolng problems. Answer open up the cooling slots. Rember the exit need to be twice the area of the imput holes. Also the engine took along time to bed in. I guess I used about 1 1/2 agallons to break it in. I also run it rich, donot rember the settings but the engin was peaked with a tacho and then the needle backed off about 1/2 turn. I think on 20% nitro I wa getting 9 to 9.5K from a 15 x 8.

Good luck

Kris