I recently purchased a set of rdm cambers from ka to suit my Koncept and new mast (k3 whitestick). After several attempts at rigging, at various different downhaul positions, I found that the cams will not stay on the mast (having no winglets to allow it to do so). Taking this into account, I believe also that if this is the case, the possibility for the cam to become unseated and end up tearing a hole in the luff pocket, I opted for the choice of putting them in the useless items box. There they can keep the select fin company along with several other items that I may one day find a use for.