Ran my B5 yesterday for the first time since break-in. Needle setting were still very rich, and had good smoke, but the temps were still a little warm(250-270). During the last qual, had a high end lean bog, so I knew what the problem was instantly. Clunk fell off the fuel tank tubing. Fixed that problem, re-tuned, and the engine ran like a top the rest of the day. Great engine, I was gonna use it as a back-up for my +4C at the AMS, but now I might run it and keep the +4 as a back-up.