Hi Ollie,
I received my RB one about two weeks ago and have the same thoughts as you.
So far I've run a tank in and waiting to run more when have the chance (outside temps warm up a bit again).
Have the pullstart version. It works.
Here's a short vid I took
http://www.youtube.com/watch?v=DbgKVvO5lZk
In case you wonder (on the video) I changed the throttle to a brushless to be able to use a rubber band fail-safe for the motor.
Picture taken at the time of the installation that shows the nice radio tray:
Few other:
Ollie, when you have the chance to drive it please share
Waiting for your further comments. Thanks