I got my Ofna Truggy box setup with little to no issues. I am running a 14.8v 4S lipo and the thing spins so fast on the flywheel that my wheels spin lol. Definitely more power than needed, but hey...at least I know it'll spin enough to start the engine up. I did have a heck of a time getting it lined up for my Losi 8ight 2.0, but after some trial and error and a couple hours it seems to work as intended.
GulfstreamIVCap, did you ever manage to get yours setup?