Hmm, I bought some Windtech screens recently for my ck91 caps, used the matrix box thing on the windtech site to determine which ones to get (don't remember if they were the 1200 or 1300's). But man those things fit tight, like really tight! At first it was like, "these are not going to fit,", but after trying a few times they stretched out just enough to fit. Have yet to actually use them though.
I'll check at home tonight to see which model they were.