Mike,
If you are flying off grass hold full back stick as the RB begins its takeoff roll and ease off of it as you begin to see the airplane "get light" to prevent any noseovers.
As far as flying goes, its pretty straightforward. My RB is one of the heavier ones at 13 3/4 pounds. I was a little concerned at first, so on my first approach I came in way too fast and it ran the full length of the runway, Second time around I got it slowed up and it landed just fine. Its an honest flying airplane with no bad tendancies that I can tell. However it is still a heavily wing loaded warbird with no flaps and and if you balloon on the flare and lose all your airspeed you better be adding power or do a go around because it will bite ya if you dont. It does not fly like a pylon racer, it flys like a 115 mph warbird. Definately not for beginners but not anything an intermediate to advanced flyer couldnt handle. I have about 20 flights on mine now and am really enjoying it.