Ok, last summer i kept poor records so I'm starting from scratch with my engine tuning. This spring so far the engine seems way underpowered. I thought it was the cold temps cause I had it tuned right on the edge of lean for +30C weather and when it got cold it would lose power.

well i pulled my plugs and they are showing rich, but nothing too bad still some colour to them, but im getting poor gas mileage, like half what i got all last summer and it just does not pull like it used to.

I have a AF guage which is telling me it's right where i want it when im on the power and yet it doesn't pull. perhaps i have something non carb related thats causing the lack of power?

thoughts pls