I have a banner up top telling me to post, so I thought I would see what you all think. When testing at idle I don't have enough air flow to get it to stumble, but at 2000 rpms in Park I get no stumble with a test button. It's a motorcycle sized engine, and only have an M1 in there now, but there seems to be alot of talk about the test function on the Alkycontrol kit and wanted to know how to judge nozzle size by stumble.