I'm having trouble rigging a brand new 2016 5.4 Koncept on the 100% KA 400cm RDM mast with RDM cams that have been fitted to the sail. Specifically, the top cam seems too long as pushing down on the luff doesn't get the cam to a position where it can pop onto the mast. The bottom two cams are easy. I have not used cam spacers.

My rig method is like the other cam sails I have used in the past:
Insert the mast over the cams, downhaul ~90%, attach boom and apply lots of outhaul, then release some downhaul and pop the cams on. The bottom 2 cams go on easy, the top feels like its just too tight and I'm afraid the top cam is going to damage the sail. I have played with different downhaul settings and outhaul, but no luck.

All the RDM cams are the same size and are longer than the SDM cams that came in the sail.

For those that have RDM cams in their smaller KA sails, can you offer any advice?