RE: Warbirds hard to fly?
Good question .
Here is what I do, When planning out which future planes I would like to build.
I take a mental inventory of what I have ie engines,radio, paint, materials Then I go and get the kit that I want.
I start building it and when it comes time to install the engine, radio etc. I either swap it out from another plane or go and buy new.
That way I am constantly changing my planes out and either selling or parting them out.
If you like OS 46 engines that engine will go on a gaggle of different planes
My OS 91 four stroke has been on 4 different planes and now awaits another airframe.
Greg