I've had this 750 for 6 weeks or so. I rebuilt the carbs when I got it, and it was running, but not well. It's got K&N pods and a Vance&Hines 4-1 exhaust on it. The main jets are 115s and the carbs are all nice and clean. Fuel screws are about 3 1/4 turns out, and air screws maybe 2.5-3 turns out (adjusted for highest idle). I'm at around 4500ft altitude.
A couple of weeks ago I tried moving the needles up to the highest position, thinking it may have been lean with those pods, and off-idle and part throttle response was great, and pulled all the way to the redline, but if I gave it anything more than around 1/3-1/2 throttle quickly, it would bog. It seems to bog much more at low engine speeds as well, but I'm assuming the effect is just amplified there.
Today I tried moving the needles down to the middle position like stock, and it now feels better in the midrange and takes full throttle better once it's going, but I have to be very gentle off-idle or it dies. To my semi-trained ear, it sounds like it's getting too much air and leaning out when given throttle quickly. Any ideas? Do I need to enrich the pilot circuit? Raise needles and lean out the pilot circuit? Lower needles more?
