When I got a hole in my inspection
plate on my Atomic engine
. I through bolted it with large washers, and gasket
sealer. You can do the same while putting the stainless bolt pointed inside.
If you have a small mouth on the jug like Scepter. You can use sealer to stick the washer to, and then the nut. Then tape the wrench to the same stick for tightening.
Then again if you are close to a Budget Marine
the jugs may be cheap
enough to just toss the worn one?.........i2f