I had to increase the flow on my pump. Keeped burning out plugs. After I got the top end right I had to lean out the bottom end! The instrutions say it's preset but thats with a pressurized tank not pumped.

Turned 7000 with the 19X8 Mejzlik turns 7500 with menz 18X6-10 The Engine seemed to be laboring with the Mejzlik. I'm going try a 17X8 APC that is what I ran on the GP Giles 202 I have a 18X8 on order I think that is going to be the prop!