Ok

You are running a wrong glow plug, you are not going to get good results with a that plug on a 4 stroke engine...buy a 4 stroke plug!! first change the plug, and then, try the following

As I said, I hadn't good results with coolpower, so I switched the gallon of fuel...

Another thing that you may want to check is the cam timing..

take te cam cover, there is a TDC mark on the thrust washer, the timing mark should align with the pushrods, you may have one tooth off, or two or three.

Then reset needles..1mm gap for the lsn and 3.5 turns for the hsn.

Saludos,

Jorge