Mercruiser I6 165hp with a Rochester 2GC carb. I just happened to notice while tuning up the boat that the idle mixture screws would leak after shutting off the engine. Doesn't leak while running, 1st pic is while engine is on, and 2nd pic is about 5 minutes after shutting off engine. I've always had hard start when warm problems with this boat. Could this be an indication the carb is leaking after shutdown? I checked float level and float drop and everything is within specs. Doesn't leak to a point of dripping of carb base, just enough to wet the base and for me to notice. 
