Screw on gas cap

[wingski]

My ’29 has a screw-on gas cap that is really hard to line up and screw on because of those super fine threads. Has anyone figured out a way to line that cap up and screw it on easily? It’s hard to imagine a service station attendant back in the day having to spend as much time getting that cap back on as it took to fill the tank. What am I overlooking that would make putting that thing back on easy?

I live in Oregon where legally we can’t pump our own gas, but I wouldn’t ever want anyone else putting gas into that car. Hell, even when I put gas in it from a plastic gas container, I always put a towel around the opening to proect the paint.

Any helpful suggestions are welcome,

Mike