Travis...
I wanted to share the layout I did based on your Yardbox. This is closer to a Tonebender Mark III.
EDIT: I noticed a polarity problem with the power inverter so I have fixed this as of 8-3-15 - no one complained so I guess no one noticed, but this layout actually works really well.
This has a power inverter so you can use regular +9 voltage.
I use matched lower HFE AC125s for Q1 and Q2, and a higher gain one for Q3. I took out the gain pot and eliminated a resistor which gave this yardbox more gain.
Thanks for the head-start, I really appreciate it: