FWIW, I am, this week, now doing our occasional (2 or 3 year) removal and cold water laundry of the 5/16" T-900 halyards I changed to in the 90's. The covers fade a little, but work and handle like new (-ish) .Windy and drizzly day here, so will wait a day to stitch 'em back to the temp, tag lines and run 'em back up again.
These replaced the OEM wire/rope halyards. I left in place the original masthead aluminum sheaves from 1988, until 2021 when we took advantage of having the spar down and replaced them all with new Zephyr sheaves.
All the mast base turning blocks and other sheaves/clutches/winches are much newer, as well.
Not sure of the exact quote, but i recall Christian saying one time that while we inexorably get older, our boats just keep getting younger!
And, every time I look at a new Bene 33 for $390K, my restored Ericson/Olson just looks better and better! And better. Oh yeah...