I flew my cap today and it was not the best day but I was able to get two flights on it. The wind was gusting before storms came through. It was rich, I brought it in and leaned it a little and it was still rich but I will fly it there a while. I can't put my finger on it but even when it was new it was diffrent than the one I got back? I heard one run on you-tube and my rebuilt engine sounds like it, but before it was rebuillt it did not??? I know it sounds crazy.