Our Rockwood Ultralite and our 2015 Windjammer both had slides that made the clicking noise when fully extended and retracted. 2 dealers told us this is normal. In fact, one time when the Ultralite's slide wouldn't open, I was told it was because we had not retracted it enough to reset the switch. This is the noise we hear. From then on we extended and retracted until we heard two or three clicks. Haven't had a problem again. And I know I shouldn't say that....
2015 Windjammer 3029 Diamond Edition
2011 Ram 5.7 hemi
Ohio River Rat
2015 camping:59 nights
2016 camping: 49 nights with many more planned