My personal experience is that it is working great. No pressure issues and zero gas smell so far and an Arizona summer puts everything to the test
I have 2 sitting on my work bench I just need the charcoal and a little beer money you cover the mailing costs.
Pm me your phone number
What does the “mod” look like? Which valve gets drilled and where? ....this question may answer itself momentarily. I’m pulling mine off today to open it up.Fact #1 - Even with a 100% correctly functional factory canister it is not uncommon this time of year (summer) to still notice some gas smell. The factory vents gas fumes through the charcoal and out of the canisters bottom into the air. The demand is such this time even with new charcoal the canister cant keep up.
Fact #2 - You should have zero pressure at the gas cap if your canister is working/modded correctly.