I had this issue on my 2013 Rockwood 8310SS. I did order two sets from the manufacturer and did not use them as I went with stainless steel. I will have to look and see if I can find where I order them from as it was earlier last year.
I would recommend either making them or look at some newer models as the skis are three or four times as thick.
I did replace the ones on my big slide and hope to get the small slide done this spring.
When I get a chance I will dig the manufacturers name and part numbers.
New to it all
2016 Tundra and 2013 Rockwood 8310SS