I have built a Sea Fury (FSDS) but have problems with the wingfold.  I have done the animation which works perfectly on the FSDS screen.  I have introduced the following in the .cfg file:
[folding wings]
wing_fold_system_type=4
fold_rates=0.12,0.11

I still cannot get the wings to fold.  Is there anything else that I have to do?
Perhaps something in the .air file ?