Sounds like tune is way off also might have small air leak
take motor out remove back plate and carb clean both re in stall with motor seal i use lucky 7 but many high temp engine sealents work
after this i would start at one full turn in from flush on bottom and 1 1/2 in on top
tune bottom to lean bog and then richen two hours then just tune top to power or temp u want to run if bottom tune is not spot on will never run proper also change glow plug to new one