You need a special Sat S2X video board to lock DVB-S2X signals. A majority of the ones on eBay that have the licenses for it have the wrong board.The swapped-out RX-8200 arrived today. It's playing the HEVC 4:2:2 CBS muxes on 93 and 97 just fine, but not ABC on 99. Is there something funky about ABC on 99?
Page 5 will show you how to check.
Congrats on scoring one, such a great receiver.