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Hi Guys, I'm new here. Just wondering if someone can help me out, I have a 2011 Yamaha XT 125 X & have a problem with it, When the engine is warm & you leave it for say 10 seconds, then give it a little blip on the throttle, the revs suddenly drop & sometimes it even cuts out, When I bought it new, It was running very weak, So I richened it up & seems to run smoother, But have had this problem with it since new. I have only done 700 miles on it, I have turned the mixture screw again even further out, But still seems weak, The screw is now fully turned out, I'm thinking it needs a bigger pilot jet in, (As it is a tickover/bottom end related issue), Does anybody know where I can get bigger Jets for it, & also what model the Carb is, I know it's a Mikuni carb But that's about it, Thanks for reading, Any replies would be grately appreciated, Cheers, Ben.