thanks blumby , yup sure did i tried almost everything i could think of , might change the diaphragm in the vortex its a brown one ? never seen one before and a little stiff and looks like maybe it wasnt seated right too , dust everywhere . i did move the screw on the mustang .. made a touch better but no cigar still .
i'll change that one from a good runner n see what it does then tomorrow , gotta be something i missed

. thanks mate

, Dave