[lippy]

bingo2 - All true, and all good points. I worked with Brent and am as sure as I can be that the ignition is ok. I did check float height - it's easy with this carb because it has Pyrex sight glasses on both sides of each bowl. My first coil was out of spec, so I replaced that as well. The stumble wasn't only off idle, but also at speed when I hit it relatively hard. I spoke with Brent and his carb guy and they were the ones that suggested I go to a bigger nozzle. Since the problem is both off idle and at speed, our conclusion was that the nozzle should be upsized. I hope to get more time on the road tomorrow, but based on a short drive the larger nozzle seems to have helpled. Thanks!