A marathon tuning session this evening. I was getting muddy throttle response going into the main, lowering the needle fixed that.Final settings are; needle dropped all the way down, 42 idle, and 100 main. Switched from my two into one that was a str8 thru muffler to a 2into2 with custom mufflers. Throttle response is snappy and the sound is pleasing. The 2into1 would make some odd tones at partial throttle. I didnt get to go for a final drive, its late...i was running lean at the tail end(8k and beyond) with the two into 1, i am estimating that the baffled mufflers should put the fuel mix about right.