I looked at my plug a month ago and it was grey/white so I put the carb needle up a notch to raise the needle. Then I took apart the carb and sprayed it out and got the part numbers on the jets and confirmed it was stock. Last weekend after running I checked the plug and it was bone white, way too lean. I raised the needle more. The engine also did this weird thing where when I started it full choke, if I lowered the choke bar, the idle went way up. When it was hot this problem went away and it seemed normal. The engine is used but I don’t want to blow it up. Can anyone diagnose what’s wrong? The temperature last weekend was in the 90’s, but shouldn’t that richen it up?