Thanks, Raul. With the Bryston I can easily mute the subs (which I have done at times while making adustments) and of course all sources are going through the same preamp.
I thought of switching back to my Dynavector 20XL but it takes me several hours to set overhang (using Mint tractor) and the thought of that is somewhat discouraging. However, it's a good idea since I did buy the XV-1s used. The seller seemed quite respected here on A'gon and claimed low hours so hopefully it's not the cartridge, but you never know.