If you can smell gas then you should be able to SEE it! Where is the gas leak?
Other than that I'd be looking at the fuel filter.. I have had several that would quit on me because of the filter..
The next time it stops turn the key to the run position and let her sit for a minute and then hit the starter to see if it may be the filter.
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />

professional bovine relocation specialist