pump rod is in the closest hole to the pivot(most sroke) I'm thinking of going to the .043 shooters vs the .035 that is on there now, I've also been told to drill out the idle tubes a few thousands of an inch, and to get the tuning (rods and springs) kit. I was just wondering if anyone has tried this? I don't want to spend $100 on carb tuning accessories for trial and error.