Bing CV Carburetors, notes, tuning, overhaul, assembly ...
Dec 08, 2002· Using a tiny amount of valvegrinding (gritty stuff) compound can often help if using a Phillips screwdriver, to grab the screw better. d. With single slot screws you should have a screwdriver that actually fits the groove without a lot of play, and fits the width of the screw fully, but not wider.