I won my very first Novice class pattern contest with a Deception back in Sept, 1983. "Warmed" OS61 VF ABC with an OPS Pipe. Those old Bridi kits built heavy and needed lots of power. My buddy figured out how to get an additional 800-1,000 extra RPM out of the OS engines without compromising their easy handling characteristics. All it took was 10 minutes with a Dremel tool and a carbide bit. Man, would those suckers scream with an Rev Up 11 - 7 1/2 prop!