I have a 1679cc with a Weber progressive carb. I just rejected it to some specs from a guy. I installed on the idle 50 from 60 on the main. On main jets 137 to 125 and 180 and air jets 160 n 180. I got it running and it idles smooth but now when I rev up it still has a slight hesitation that I just can’t get out n on the idle back down a small pop sound from the exhaust. The reason I changed the jets is because for it to idle smooth the mixture screw had to be closed n I know that ain’t right. Now I’m not sure where it’s at but questing it’s maybe a turn or so out which is better than before. So any ideas on what I need to do. Oh and the 88mm pistons are thick walls with the 90.5mm heads on it.