yea I would put the needles back to factory setting and maybe lean it out from there quarter of a turn.. And fully charge glow igniter batts and stuff. So its all ready and try again tomorrow..
It's either a bad tune-When it cut at half throttle did it struggle to gain speed.. as it could be too rich.. or too lean.. but putting it back to factory setting will solve the tune side of things.. another possibility is glow plug it shot-How much use has it had? and when you do it try a few times then stop.. as flooding the engine makes it worse. And before you start it-Factory settings on needles maybe slightly lean them out so its not sobbing rich then-put your finger over the exhaust tip and pull a few tugs on the starter cord-Or starter box until you see the fuel enter the carb then stop.. then heat it up a bit-Hair-dryer heat gun not a soldering iron!-on the Casing not the head.. then glow igniter then try again.. Patience!
Let me know how you get on!
