You are extremely rich man. Lean out your LSN a 1/4 turn. Let it warm up then check temps. Tap the gas and see if it stalls. If it still stalls and the engine is around 170, lean the LSN another 1/4 turn. Its just running really rich.
Matt
ORIGINAL: creyc
I'm using the stock plug, or an MC-59 which is recommended for break in. I'm running Maxy's 20% nitro, the same I use in my Savage 25, Maximum MT and nitro MT2.
As for spiting fuel out, well does gushing count? I literally now have a puddle I have to clean up. Great.