Have you had any luck sorting your RG?
Ive got one that Ive fitted 1mm OS pistons & rings, its an 84 with no power valves.
It runs OK but is real weak in the mid range , 1/4 to 3/4 throttle, then when the revs get to around 6500 it takes off - smoke & noise everywhere.
Im going to try raising the needles, at 1mm overbore its nearly 5% larger so maybe running lean
Also I'll have a look at the electronic air valve, it bleeds air into the carb emulsion tube, but cuts off at about 6500rpm
good luck
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