I finally got some fuel to break-in my brand new OS1.40RX. Things are not good. When I start her up for the first time tonight she ran horribly. Really hammering away. Spewing gas from carburator. Running 300% to rich I think.

I was using 0% Nitro FAI fuel because my manual says to break her in with 10% or less Nitro. The only other fuel I have is 15% Nitro.

Engine was set up just like the manual stated: 1.5 turns on HS needle and leave everything else as set by the factory.

Does anyone have any ideas. Could the 0% Nitro be the problem. Thanks.