I would recommend getting the instruction manual for the engine.
The manual will show you the stock settings for the needles.

As for pinch easy way to check take out the plug, and rotate the flywheel if you feel resistance at the top of the stroke it has pinch. If not the piston, and sleeve either need to be re-pinched or replaced.

What glow plug are you running with it? Is the glow plug warmer completely charged(some people forget this when new)?


BTW I directed you here cause in the electric forum the only thing they would say would be buy an electric, or something stupid