I have what appears to be an older jk pro valk. I was told something about the older jk pros having champion plastic, but I wasn't exactly sure what he was talking about. Can anyone tell me if there's anything unique about the disc?
thanks!

there was a run or 2 that came out while the good Champion Edition plastic was still around and some of that was used in the run(s)so they were quite tough. thats about all i know

If I am right, there was only one run. They were the first run 4x Valks. They seemed to be a little flatter than the later runs of the 4x.

I have an early 4x JK Valk and it is definitely flatter and more overstable than most valks...but I don't think it is really anything special. Nothing like the old ce flat overstable valks.