In tank fuel filter looks good, I've already had tank apart to clean it out and reseal the tank gasket. Yes a small amount of raw fuel while idling in airbox area. Stud is tight....it actually came off with af cover when I first got saw so I e already addressed this issue. Carb is a hl63d. I'm reluctant to fiddle with adjustments too much just yet cause it did run good before. Not saying it doesn't need fine tuning, I bet it does, just don't think it's so far off that it's causing this problem. It's gotta be something stupid.