ORIGINAL: jaka
Hi!
As has been said earlier...15% nitro is too much! Rossi engines are set up to run on 0-5% nitro. Using higher percentages requires a 0,1mm head shim or two.
Also use a 8-10 oz tank, No bigger! Preferably set up with Uni-flow (two clunks).
Just curious as to why the Rossi would need to be set-up using Uni-flow?