No issue here -- there are many Rev Pro's and Impacts with thousands of flights on them and they are all fine. If they didn't have confidence in it I am sure C-ARF wouldn't supply it.

My understanding of the (relatively) few failures there have been (RP's and Impacts) is that sloppiness in the bottom hinge may have played a part -- hence the emphasis in the new instructions on that hinge and the formers in the back to prevent major damage/inhibit flutter if whatever causes it happens. I do note that is a building issue rather than a design issue!

The rudder set up (and the fact the bottom is the fatest part) does mean that any binding at all (whether when setting up throws, or even at the time of fitting and checking movement) places pressure on that hinge and could work it loose. The 1/2" exposed/unconstrained part of the hinge shaft on the fin side gives a decent sized lever arm if there is binding -- and can loosen the fin side joint unless it is really solidly glued.

Perhaps my occassional lapses into enthusiastic flying without due care and attention on maintenance between outings make me more nervous . . . . .