both Montana & PBS is back to "normal" here
The PBS mux is back to "normal" for me as well. Was out tweaking the dish again today (I did say I'll never learn) as the signal was fluctuating between 30 and 45, so thought I could tweak it up to the 45 (which is "normal"). It didn't want to co-operate, and soon I lost the fluctuation and it remained at 30, then started to drop a bit. So I used a different frequency to peak, and then checked back, and it is now in the 15-20 range. I say a few choice words, try to peak on it with minor movements of the LNB, can't boost it, soon lose it completely, return to the other frequency and re-peak on it, and check others for strength (all about what I expect). When I re-check the PBS mux it is just under 25 and fluctuating, and then suddenly, it jumps up to a steady 45. Very, very, quickly locked down the LNB! Signal has remained steady ever since.
Also tweaked the other LNBs back to previous levels, and in fact, gained a bit on the H2/AMC6 LNB. Will NOT touch the dish again!