Does anybody know where I would get one of these repaired? I discovered last year that it was opening the powervalves at low revs and closing them at high revs.
Fortunately a spare had come with the bike, so that sorted it. But I would like to repair the damaged one, and have as spare.

Hi Tom, give Nick Prionas a try at 2t racelab, e mail, tonelessdiy@yahoo.gr . He is in Greece, but dont let that put you off, Nick is a top man and very reasonable on prices. You can look him up on twostrokeracelab, he also has an ad on a certain auction site under nsr250 for repairing pgm's, i have used Nick myself for various things, and he is so enthusiastic about 2 strokes.
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Proud Father of , 05 ktm 400exc supermoto 2018 honda crf rx supermoto