Quoted from balboarules:Shopping it now...did not really need it though, just had to....plus I like white rubbers over black..
Ordered the x and y nut, I am pretty afraid of changing them though! But have to, hand squeals
Might not have to. While its wise to replace these, a lot of the squealing is from the motors and gears. 4 screw and clean the existing grease out regrease with lithium grease and oil at the small gear. There is a tutorial here. I believe its in the JM clup posts.