Ben has already suggested you do a bucket test. I just have a comment to add regardless of what the bucket test shows.

If it were my pool and I had a CYA of 80, I wouldn't be using pucks at all, ever. I'd use bleach instead. Pucks will continue to add CYA and yours is plenty high enough already! Besides to clear a pool up, you can't add a large enough dose of chlorine with trichlor pucks.