Dave,

The problem is not holding the doors closed once they are closed, its getting them to close once they are open and the air stream catches them.

The on doors I have seen where this is a problem, they open up so far that the attachment point for the door rams on the hinge is essentially in line with the hinge point when the cylinder is fully extended and the door is fully open. Thus the door rams have, in effect, no leverage to pull the doors closed from the open position - the ram is essentially just trying to pull the hinge wire off its mounting.

This could be solved by moving the ram's attachment point further outboard so that the doors do not open as far and there is still some leverage to close them. My modified hinge/door lever adds a bit of extra help to this problem by making the lever arm longer, *and* moving the attach point lower into the wing when the doors are fully open.

My mod is probably not necessary if the door hinges and rams are positioned properly, but I wanted to make sure that they worked and I didn't have to fuss with them in the future...

Bob