So the new Maverick station near my house has ethanol free 91 octane. My 62 responds very well to ethanol free so I filled up with that for the last few tanks. It's about 60 cents more than regular 87 octane, but worth it IMO. My engine is noticeably smoother, can get up to speed much quicker, and can hold hills better. Since I have 91 octane in there I bumped up the timing a little bit too, and the combination of that and better gas has made a big improvement. Also got me an extra 2.5 MPG on a trip I took this last weekend across the state. Just sharing my results and recommending that everyone here switch to ethanol free if it's available to you.