I did a little porting and lowering on this saw and it is putting out about 175 psi. Hdc carb kept flooding so I finally set it up with a hda144 --- the saw floods! I changed the coil , might be low spark--- nope! The hda was tested and held shut to 25+psi and no leak down, do I have some kind of alien **** going down???? I checked the float level and it's right.