Seems that the day/night shades are made by Irvine Window Coverings, although the decals on the bottom rail of our TT shades are 'Specialty Window Coverings'. Both Irvine and SWC are located in Elkhart, IN. Small businesses; the same business? Regardless, parts for these shades are hard to find, although I did find one Internet source that carries end caps for 'old' and 'new' style D/N shades. Will give those a try and report back for any others that have these shades.
'09 Rockwood 2603
2006 F250 with a motorcycle