Instead of cutting and glassing in a dimple to clear the mixture arm, I heated the snorkel with a heat gun and simply pressed in with my thumb to create a depression. There’s just over 1/8″ of clearance now, but the mixture arm is only in this position when the mixture is in idle cutoff. When the engine is running, the arm is no where near the snorkel.
I also opened up the hole for the alternator clearance a bit and then prepped four layers of 9oz bid cloth between a couple of sheets of plastic (this picture was obviously taken after I cut out the piece to be applied to the snorkel).
Here’s the glass applied to the snorkel.
I was having a hard time keeping the edges of the glass stuck down to the snorkel because of the tight curve, so I laid a piece of plastic over it and taped it tight. I also wanted to keep the center depressed to provide additional clearance for the alternator bracket, so I taped a paper towel down over the depression. I should have roughly 1/4″ of clearance between the snorkel and the alternator bracket.
