I just got off the phone with John. The B-15 is in stock at $79.95
Also, here are some test results.
All testing done with Brodak 10-23 fuel and a Fox plug.
Comment - it was just a bit hard to start due to the top-end pinch. After 5 minutes of running, there was no problem at all.
Hot starting was EXCELLENT.
After I ran it in, I tried a number of Master Airscrew black plastic props, in the order shown.
10-6 ------------8,100 RPM
9-4 -------------11,700 RPM
8-6--------------12,000 RPM
7-6 -------------15,000 RPM
8-4 -------------13,800 RPM
Feel free to contact me with any questions
Bob Z.