So the engine started up nicely. Had some chain issues but I got most of that taken care of. The idle has gotten better within the first couple times riding it. But the throttle is only best at slight twist. At halfway pull and up it almost backs off. Is this normal warm-up issues. I would say I get mAybe 15 mph's tops. It's getting adequate fuel too. Any quick mods too do? I went serching but couldn't find anything helping my issues. Thanks.