pickled up an 025 on ebay.The saw was not fireing.replaced the coil and am getting fire now.saw will not run.Does not fire spraying mixed gas or starting fluid directly in the carb.Changed fuel line and filter,carb,changed plug multiple times,coil gap I used a business card.Did a leak and vacume test appears ok.Tried to do a compression test but gauge screws in to far.Holding rope and dropping saw spears ok.Piston looks good through he muffler port (help)