Hello, does anyone know an easy way to get the lead plugs out of the out board carbs to access the mixture screws on the Holley 2300 series front and rear carbs? My 440 idles fine and the out boards open but bog. I have the black springs in the diaphrams. When they open at part throttle they don't seem to pull fuel through the venturies. I had the carbs on a 383 and they worked great, but on the 440 the same carbs seem to spike lean at part throttle. Thanks in advance for any replies.