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Oh no another tt-r90 post?

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Yes, it is sorry if this was posted before but I cant find the specific info I  need by searching.  I am working on this tt-r90 and it is giving me problems.  It bogs and pops after 3/4 throttle.  It is rich I know because I can disconnect the airbox from the carb and it runs better, sometimes perfect.  It has the stock jets, 90 main and a 12.5 idle/slow jet.  It seems like all the posts I find are about the bike running lean, not rich.  the idle jet was replaced a few months ago but maybe the main has been enlarged somehow??  I may just order a new main (#90) anyway and see if it makes a difference, where is good to get jets?

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