Another tip on the plug would be to use an exacto blade and gently pull the element down a "tad".

Over all I'm glad to see that the motor is headed in the right direction..... the idle will probably get better with some run time as well. If the motor is still breaking in I would suggest putting it on the plane and "flying" the motor for break in now that you have it close. These motors like to be flown.

Skids