Fuel Gauge Seal Leak Test

[KansasRick]

I had a bad leaking fuel gauge seal recently that leaked gas into the cab of my Model A. It wasn't just a drop or two but a considerable amount that ran down the dash under the instrument panel and made a puddle on the carpet. I am grateful I didn’t ignite it. I cleaned up the mess and replaced the seal. I haven't refilled that tank yet. I am asking if there is an recommended way to test the fix of the new seal besides filling the tank with gas and making a mess again in the cab if the I didn't get it right. What would you suggest? I’m a little shy about doing this and finding it didn’t work. Thanking everyone in advance.

KansasRick in Edgerton, Ks