Funny how all the greatest motorcycles that history will ever see, all smelled of gas and oil, had genuine leaks of various fluids, carburetors needed to be "tickled until gas ran out, and their riders had nicknames such as "Oily Boot Bob" who performed any kind of maintenance/repair at any available parking space or roadside with the small toolkit pouch he carried .
When anything arose, he took care of it himself.
Any classic Vincent, Ducati, Norton, MV, etc, had a lot more issues than this, by far, and people are climbing over each other to pay up to $100k for them when they can be found. Runs in paint jobs, intermittent electrics, leaks, and all.
Are we sure that things have "advanced" since then?
These seemingly "flawed" motorcycles will forever be cherished and remembered. New motorcycles are even built to evoke some of the memories of them.
How many newer motorcycles that are seemingly "perfect riding appliances" are going to be remembered for motorcycling greatness, and collected? Probably none.
Rant over.
Fix your fume sealing issue and go riding. For extra points, make your own seal.