I know you can do the mod where you add the plastic piece to the ski rubbers. I know that you could also use a different rubber that was already thicker I did this on my 97 700 sx with 2002 plastic srx skis now I need to do it again to my fathers sled with the same set up but i can not remember what year or style sled the other rubbers were from if any one knows it would be helpfull thank you 
