Hello everyone , working on a 1963-1965 . 250 McCulloch to get it going , needed a carb kit and saw some of the different repair kits , older posts and many kits long gone ,new numbers .contacted the Tillotson folks and they referred me to repair kit RK106HL as the kit for this early carb, will see how well it works , hope this helps for those looking 3/30/20