Just got back from tuning. Surge you are right about shiming, 1 shim makes a lot of different. If I'm in Cali, I'm sure TG777 will kick me in the butt for not listening to him. Somehow the engine doesn't seem to have the acceleration used to have and it like to peak 280F no matter how rich I set on HSN (tried 5 1/2 turn out). Maybe it's because I'm running on a open parking lot + warmer plug. Going to do more tuning tomorrow after I pick up a new fuel bottle, don't you just hated when things are start to working well and fuel bottle decide to tear apart?