I just learned from a discussion with a new Forum owner on another thread, that they replaced their (new to them) 2013 ACE 29.1 drapes after ordering replacements from this California company I believe:
https://www.garymanufacturing.com/co...s-rv-curtains/
When our curtain liners finally crapped after 5 years the DW purchased quality lining material and just removed old liner and sewed in the new.....works well. I am sure the further South you live/travel the faster these OEM drape liners will fail......unless Thor has changed their source for them.