2015 Work and Play 25 ft. toy hauler awning replacement

Need new fabric. It's a power awning. Old school on the manual ones was to unwind the spring blah blah but I've seen videos where you make a notch in the end cap and slide the new fabric on?
It attaches to the roof in a channel you slide into. Looks similar to how we install awnings on race trailers.
Also suggestions for new antenna for TV. Not interested in satellite for this rig.