So after a rather, er, interesting session on the dyno this morning to see whether there was a fuelling problem as I thought, it turns out to be all over the bloody shop. Rich at the bottom, then lean, then rich, then lean, sorting itself out for a bit and then going so lean around 9k that I'm surprised I've still got valves and pistons. Which wasn't *quite* what I was hoping for. So the race system's coming off, the dynojet kit's coming out and it's all going back to standard. Something I was thinking of doing anyway (the Micron system should fetch a few shekels on Ebay, if nothing else) and Mr PDQ was in full agreement. But before I put the rot-u-like stock exhaust back on, I want to get it corrosion-proofed in some way. Anyone got any hints as to methods, places and prices? Ta.