BLACK GRIT !!
The Crud in the Bowls is black and feels like grit. As long as I have the top off I am gonna check the floats for clearance and drop.
This is what it looks like. Not what I had expected. This engine has 2 fuel filters, one is a in line by the mech fuel pump, and the other is a Russell, just before the fitting that goes into the carb.
I am gonna drain all the fuel and look at it.