I have been having trouble with the fins on my Cabrinha Kiteboard.
The set screws keep undoing and I have lost two fins already. Is there some product that you can use to help the set screws take to the thread in the fins better for a tighter fit???? I don't want to use locktite or similar, because I want to be able to get the screws out in the future if needed.
Not sure of the screw setup on Cabrinha boards i.e. whether screws are countersunk or not. If not you could try a small spring washer which will stop them from undoing.