Thanks everybdy for the replays. W. Robison summarized the facts very good and things start to make sense in my little brain.
When i started the design, I copied everything from the full size plan, but then I realized the models are much harder to fly in abnormal situations, so I want to add more stability. I heard a long time ago that downthrust has a way of cancelling out some of the left turn tendencies, but nobody seemed to confirm that.
Here is my project...
JG