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About richardh30

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  1. hey, this is my first post. i have a '72 yamaha dt 250. i recently rebuilt the carb and now it seems to be runnig really lean and the rpms randomly shoot way up, like from idle to 6000 rpms in a matter of seconds. i've heard this might be due to a leak somewhere in the intake. any thoughts on how to go about diagnosing whats happening?? thanks!