Glad to see you used my guide.

I have gotten some of my worst mpg's going over the hills and mountains of western Maryland and West Virginia. It could be possible that the hills are eating at your mpgs. My commute has a few hills but is over all is mainly flat.

What are you highway speeds? Anything over 70 miles per hour is going to really cut into mpgs as well.

With warmer temps you should do better. I will keep an eye out for your numbers as the Spring turns to Summer

Best wishes.