Ah yes, riding time just around the corner, time to finish all winter mods and get ready for the road. Got done a-wrenching, and fired her up to balance the carbs. About half-choke, good deal. Running a bit rough, but not too bad. Pushed in the choke to idle while I balanced. Got 'em balanced pretty easily. Let her run just to hear the sound once again (been a long winter). Anyway, after about 5 minutes or so she starts to sputter and backfire a bit from one side, and then dies. Would not start again without re-choking. Checked the new plugs. They were a bit loose so I tightened them. Checked under the cap of the carbs to make sure I got the diaphram in place after de-shimmimg the needles. All looked good. Retightened all around the new intake manifolds. Fired her up and after 10 minutes she died again, only this time not much sputter and no backfire. Won't start with the choke, and when she does a nice loud backfire. Kind of at a loss. Does this sound like an old gas problem maybe? I had gas sitting in the tank but I did add StaBil last fall. Any other ideas for symptoms like this?
