Glad to hear the gear change problem is sorted, as for the flat spot I have fitted a PCV to mine and had it set up by Motrac in Ellesmere Port on their dyno, nice smooth power curve now (pic), I have only ridden it once since though as my bikes are being stored whilst we have an extension done, but it was definitely an improvement it also has Arrow cans stage 2 DNA filters and Kev's O2 mod instead of the dynojet one ( as there is more adjustability )