I find it easy to spin most a/c in AH. The Camel isn't one of them and I don't now how easily it should spin. I've talked to a guy who flies a rotary engine Camel but he doesn't spin it. You can imagine why.

The fact that aircraft designed for aerobatics fly differently than WW1 aircraft shouldn't surprise anyone.
Gyroscopic precession creates a yaw force when you rotate the pitch axis up or down. The yaw force is not constant, it only occurs while the pitch change rotates the nose. If you are stalled and falling straight down there is no yaw rotation from precession. If you are yawing with rudder then precession will pitch the nose up or down. This is why I don't see a problem with the Camel torque modeling. It behaves like I expect it to.
As I said I don't know how easily the Camel should spin but I see it as a different issue from the gyroscopic precession.