Have a quick fuel sq650 mechanical secondary double pumper up for sale. I bought this quite a few yrs ago for my 340 put it on and it runs way too rich and I can't get it dialed in. The carb has maybe 20 hrs of run time and less than 25 miles on it, it will need new gaskets for the float adjustment screw and nut and it is a little dark inside the throats from some backfires. I am asking 350 plus shipping obo from 61469 illinois.