What I suggest you do is start a quick mission with the Camel (or SE5a) at around 1500m with no enemies.
The Camel needs a lot less curve editing than the SE5a does, so you will need at least two curves setting up, I think before I got the FFB2 stick I had only 5 curve setups. One was specifically SE5a, one specifically Camel, one was for DrI, the rest of the rotaries shared another and the inlines were all on the last profile.
When in the air you can open up the controls/responses page and edit the curve for pitch. Just start easy with dragging down the central point until you are happy with the setting that will give you steady level flight (save after each edit).
Once you have done that and got confortable level flight for your stick, you can then add in extra points to the line and smooth out the gradient transitions (otherwise you might find the plans seems to "jump" at these points).
Do the same for the yaw (roll was OK as default for me I think). You will wand a flatter curve towards the centre so you have finer control around rudder centrepoint and more course control the closer you get to full rudder deflection.
Flatter response curve means more joystic (or pedal) movement for less control surface movement (so you get the ability to add tiny amounts of rudder or elevator and thus achieve finer control), the steeper the response curve means less joystick (or pedal) movement for more control surface movement (so it's actually harder to make small adjustments in this area).
It's all about trading fine control in one area of the curve for less control in another area.
Here's a thread from a while back specifically for the SE5a, hope this helps.[Tip] How to pitch trim the S.E.5a?Cheers
Akhenaten, the prince formerly known as Amenhotep IV