Several things. 1 being the bike at the show had no odour at all. It is possible that it was drained for the show for safety and then washed combined with good hvac. Another being a guy with the same bike said to me that he had his in his house and didn't notice anything by the cap. Another being forum posts talking about how on their bike of different vehicles saying that sometimes the gasket is installed upside down via error especially if the gasket has a rib or rim on one side but not the other and flipping it over helped resolve the issue, etc. The ones talking about the odour also tended to be the ones with visible leaking especially when tank filled high and leaned or bike tipped on side. If fluid can pour, so can air.
2 years? That's surprising to me. Wouldn't it have outgassed dry after that long?
I think at this point I need to look at my cap. I can't even remember now what the underside looks like. Maybe it has nothing at all except those spring loaded metal wedges. I do remember that when I push down on it a bit it springs back up a little. I try to lock it while pushing down on it. I will have to see exactly how it vents. The only hole visible from above is the keyhole that I can remember.
I know it'll never be "perfect" but I do want it to at least be "comparable" to others.
What's interesting also and probably unrelated completely is that when I first got it I noticed that if I turned it off with the kill switch I could smell gas in the garage for much longer. So I got into the habit of turning it off with the key instead mainly because it's what some Harley owners had to do to burn up the rest of the fuel in their system for whatever reason when parking. It did seem to make a bit of difference but I am not sure why between switch and key either.
