I would not put Sailkote on the traveler tracks and cars. SailKote is so slick that the bearing will not roll and they will eventually get flat spots on them. I would recommend that you use McLube OneDrop since it is actually designed for bearings and works quite well.

I know all about the flat spotting problem because the previous owners of my Nacra 20 used Sailkote on the traveler bearings and I had to replace them.