Dick, if you send me a Saito 170 I'll be happy to test it, but you know your NOT getting it back ( I have a Monocoupe too remember)
Volfy, any 25-40cc gasser should do just fine, no dummy radial but lots are available in the accessory market.
Swooper, The best part of having you guys help with the design is that if something goes wrong I have someone to blame.