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Need help please!!!

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Hi so I got a 1981 yamaha xt250 and I got it leggaly and was driving it then it bogged down randomly and now it will not go into any high rpms it kinda likes idle and maybe like a mm or 2 of movement with the throttle. Any else it boggs down and trys to shut down. I took the carb out and cleaned it my best(I might have missed something I'm not good) I replaced the gas. I cleaned the air filter and I am waiting for a new spark plug to come in even tho the old spark plug has a really good spark please help me

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Might be running too rich. Check the following standard specs against the settings/jets in your carb:

float height - 23.5mm

Main jet is normally a 165 - make sure it's completely clean/clear

needle condition & height - not sure of factory setting but the higher it is the more rich the mix.

Pilot jet supposed to be a 130

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