[msbhammer]

hammer,
I had the same leak/smell of gas odar as well on my 86 V-20. Didnt see gas, but smelled a strong odor of it.
The seal around the sending unit was loose. A few loose screws as well. It was a simple quick fix. Look for the most likely problem first. Good luck and keep us posted. If tank needs pulling, there plenty of guys here who can take you through it step by step. But thats only if you submit pictures !! ;D ;D