If anybody is needing spare sky slider parts, I came across this craigslist ad from Allentown PA. $100 for most everything except the tracks.
https://allentown.craigslist.org/pts/d/lehighton-canvas-power-slider-roof-for/6848928589.html
https://allentown.craigslist.org/pts/d/lehighton-canvas-power-slider-roof-for/6848928589.html