Do you guys do this?

Recently I' ve been focusing on using back tension to hold me at full draw. Since doing this, I' ve noticed I' m getting a slight " clicking" sound as I settle in. I think because I' m pulling hard into the wall, my cable slide is moving just a tad farther back than it had before, into a part of the rod that it hasn' t slid across repeatedly. Looking at the rod, I can tell what part get' s normal slide travel and what parts don' t.

I' m thinking of trying to buff, polish or somehow " lube" the back end of the rod, to prevent this clicking. What do you guys recommend I use? I' d thought of string wax, but am leary of using anything that may interfere with the smooth sliding action, so I thought I best ask first...