The screen is clear. almost like new good flow
The needle was wrong in my rebuild kit. So, I used the same lever needle and spring. It was carefully reinstalled back to where it was. I did no adjustments to it. I just cleaned the carb, put a new main screen back in and a new diaphram and gaskets.
Do you still think it was the needle?
The kit had the wrong needle. It was obviously 2 times longer and would have never fit, so, I used the old one.
I checked all of the things you mentioned earlier. Seems ok. The piston looks great on intake side and exhaust side. Also good compression. I had run it already without the fuel line hooked up to burn out the gas in the crank and I did try to spill out any gas from the crank. It would not start last night no matter what I did.
Here's the confusing thing. This morning I choked like nomal. It sputtered. I put it to run. And it ran like a champ. Great acceleration, good responsiveness. I ran it for a good 5 minutes Ideled great etc.
Then I was going out to cut wood put my jacket and bibs on. Took it outside and it would not start again. I'm about ready to take it to the Stihl dealer in town. I'm baffled!!!