DP:
Haven't heard about anyone building a Beech 18 for a long time.
The Ziroli designs, though, generally fly very well for scale planes. They all seem to have an automatic device that induces a spin on loss of an engine. But as I remember, the D-18 is not as bad as many.
Point being, get a better flying twin to learn on while you build the Beech.
Bill.
PS: The Twin-Air 45
www.ne-aero.com is a good one. wr.