Ok here are the symptoms people: Issue 1: Hesatation: On the freeway / aterial road at 6k-8k+ in 3rd or 4th. Open the throttle to accelerate... Major hesitation as if no fuel / 2% of fuel is combusting. - Occasionaly randomly folowed by a small pop back fire. Back down a gear to lift the rpm range still no effect.... does not occur at low speeds >70kmh and around town but the rev range is generaly 2k-6k in town. Issue 2: Random High idle: Sitting in traffic and or at toll gates, The vfr will idle at 1.2k then 3k then 2k then 1.2k or 4k or what ever it decieds it wants. I have cranked down the idle on the left hand side of the bike to compensate. Generaly to no effect. So there are the problems.... the bike is a er: "modified" Honda VFR400 1990 Full Yoshimura system Unknown jets and needles ( reputidley the largest avaliable ) Full HRC Ignittion - modified redline 16.5k Unknown Gearing ratio's but I have been known to be in 1st in the hills of beaudesert at 110 and 15k rpm :roll: Its prety obvious its a fueling issue but er how do I fix it / should i just take it to a good mechanic and say here is my wallet dont abuse me... Side note: I am putting together a jaycar O2 sensor display / getting a sensor installed. Later next week i will be able to tell you how rich the cow is running.