What "build" did you use to create your antenna?
Do you have any spec's on it?
Below is a site with plenty of builds with real data behind them. I've built a customized version of this one and am working on another version stacked.
http://clients.teksavvy.com/~nickm/gh_u/gh10_15u15.html
And another site. Again with strong data behind them.
http://imageevent.com/holl_ands
With that said, it would be helpful to have more information on your current setup. Such as antenna height (could you run at actual height and maybe =20' and =40'), don't see where that is input. Age/condition/length of coax, number of splitters and TV/tuners on it?
Curious as to the KFBI channel and why it is not on the TVFool, it maybe totally unobtainable.