carb issue

Hi there, finally decided to post a thread after quite a bit o research and not so many results. I rebuilt a M2 550xp. Went through ALL of It, from the crank bearings to the new Spark plug. Pressure/vac tested the case, It Is good. Went for a little break in and some small cuts, and the saw...

Sorry if this is not the right place to post, not really mod but it’s for use with the fire department. I put a new OEM carb on a 036 pro and the low screw will not richen up and slow the saw down. It just increases the Rpms, yes I’m turning counter clockwise. I will vacuum/pressure test in the...