I don't normally like messing with something that works well, but I wanted to re-route my vent tubes and bought a 7602 Racing vent filter. Plus, when I bought the bike, the dealer gave me an MSR mixture screw, so I installed that, too. Prior to this, my bike ran perfect. Now, it sometimes bogs if I snap the throttle open (not too often, but enough to be a bother). And, if I'm cruising at a constant rpm, sometimes it will surge a little, like it's not getting enough gas. And, gas drips out the overflow if I leave the petcock on. It still runs pretty good, but it ran perfect before I made these changes, and I'm not sure what to do. (I'm not very good with carbs, esp. modern ones.) I tried the mixture screw 1.5 turns out (as MSR suggested), but I'm pretty sure mine was 2 turns out, so that's where I have it now, but it ain't right. Any ideas?