OK...I thought you had a Holley. I have quite a bit of carbon buildup on my plugs..I want to put in smaller jets before I put in my cats....I'm running a 650. with 62 jets. Going to roughly follow your 7% decrees in the jet size. Thanks for the info.
I down-jetted the carb based on the 3000 ft or so Calgary elevation is above sea level. I had read it’s one jet size reduction for each 2000 ft? above sea level. I’m not sure if the exact elevation numbers.