Following the ghastly (and very educational) experiments outlined above, I too felt the need to fix my ill-fitting snorkel. The stock fiberglass ended up too far forward and too far outboard for my intake ramps:
Very tight to the front edge:
Not centered on the ramp or the inlet:
Hanging loose over the edge:
So, using all the VAF smarts I could scrape from DanH's fantastic fiberglass tutorials and other franken-doers, I decided to build a custom flange for the filter (apparently, the -14 already has this). MDF and insulation foam, covered with thin epoxy, wax, and PVA:
After layup, unmolding, and digging out the pink foam:
Fits the filter perfectly!
Nicely fits over the intake end of the snorkel:
However, the position is still wrong .. it needs to move back and inward:
Ok, doctors, time to prep for the "cut":
... stay tuned for part 2 ...