I've been using a tube rectifier with a TDR since getting my ST-120 in mid-2016. No problems until I saw this thread, so it must be a jinx. Yesterday I turned on the amp and the rectifier put on a light show. I quickly turned off the amp. The fuse had blown so I replaced that and put in a Weber copper top that I had purchased to use as a spare. Thankfully it started up and played fine, but after reading so many comments about the heat of that "tube" I'd like to use another tube rectifier (I have a couple of spares but used the Weber instead) but am hesitant because of Bob's warning.
I did write to Bob when this thread first appeared and asked if I should take the TDR out of the circuit since I was using a tube rectifier and he said if it is working okay then just leave it in. So I guess I jinxed it by asking, haha.