Hi my name is paul and I own a TDR250 and I experimented onit alot,the bike would work good with the power valve unit disconnected,just set it a little off from the closed positon,the closed postion being the other end of the rotaion opposie where the 2 holes line up,I know iit sounds kinda confusing but take off the cover and look at it and you will understand what I am saying,
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