One of these threads that I have shared, have the how to. on making everthing fit. I dont remember which one it is, sorry. But it shows you how to make the correct modifications. Its simple and easy, and it works.
IMO the Gripper or the SLP is the best ski for the Cat For Mt. riding. The C&A are to square on the tail, like the stock skis. And makes for some of the side hill issues. Spent alot of time with this last spring, cutting and trimming on perfectly good skis. All for the cause!
Alright Ive have some free time, the how to modify the rubber and mounting is not in these treads. Ill track it down, these theads do have good info anyway.
I didn't use anything extra other than some thin aluminum bar stock pieces as a spacer between the cat rubber and the ski.
I run my skis in the narrowest position and had to cut down the lip on one side of the groove on the grippers. I just used some end cutters and got it as flat as I could.