The bottom 3 in the picture were in the drag washer stack on a Shakespeare 2052 spinning reel. The top one in the picture was on the bottom of the spool between the spool and the oscillation shaft (on top of the drag click gear). Can anyone confirm if these are indeed leather drag washers on these reels? If so, what are opinions about leather drag washers? Is leather a good material for drag washers? These are pretty stiff, is that how they should be?
I have the capability to make my own drag washers from HDPE plastic which is somewhat similar to Teflon (slick). Would that be a better route to go or is leather a good reliable material for drag washers?

I was working on cleaning up the spool itself and I was able to clean it pretty well but it is kind of chalky looking in areas. Anyone know of a way to fix that? Also, some areas are yellowed a little...anyone know of a way to whiten the yellowed areas. The spool is still pretty solid and will work fine but I like this old reel and wanted to help it look a little nicer. It will be a user for me but I like to do what I can to make them look nice. Here is a picture of the spool, chalky areas around the top right are visable in the picture.

Thanks!