does anyone use 100LL av gas ?

unlike your customers I deal with my own tune up issues on my own and that's exactly why I use one good consistent gasoline and a wideband O2 sensor. Probably not a great idea to give away My source for gasoline as it may dry up my own Supply.

Don't worry about me knowing your secret spot. I run plain old pump gas. I'm not about to start using AV gas now.