@Aidoe thanks, it took me three week to do each game just once and watch J.Y. explanation but fool-proofing them took me about two to three months I was going through core curriculum as well.
I'm glad you guys noticed! The problem sets are indeed printable now. We'll soon have LRdrills sorted by question types (e.g. all weakening q's from pts 30-39) too.
I would fool proof the games 1-35 ... your overall long-term improvement. Foolproofing never ends technically, because you ... 1-35 and having those fool proofed before beginning full timed ...