| Tough break Chillo...........
There's something in what you say makes me think it could be the throttle sensor??
The CPU uses the info from that to determine the throttle opening. If it's set wrong and showing a higher voltage, hence wider opening, then the fuelling would be heavier than needed. The top end leaning off, could be the sensor going out of range??????
Not sure, but it's worth a shot?
Talk with JH tomorrow | 
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