Been having an idle issue as of late. Hung up and then will drop. Into the carbs at this moment and been reading a fair bit about jetting and issues. One thing that just doesn't make sense to me is when I see the 45 idle jet used with the stock 50 air jet the Ims screws seem to be in the area of .75 to 1.25 and with the stock 42 and stock 50 air jet the setting for the ims seem to be in between 1.75 and 2.5. Yes there are some that may contradict this and have taken elevation into account also but this seems to be the pattern. Running Factory Pro needles(not sure of position yet) and only have the front out with a 175 main. Trying to deal with the idle issue thinking I was rich I took the srews out to 3 with the 45 and AIJ 50 and needed to choke and then went the other way to 1.25 and she fired right up but still had the idle issue. In seems to contradict logic with the bigger pilot jet. Why have the ims srews turned out less with the Bigger Pilot? Thinking more gas should mean more air to balance things out. Just trying to understand this here and not asking for help with the idle issue on this thread.