When I got my Russel about 40k miles ago I used to have a love -hate relationeship with it. Hate the 1st day then love every other day. I have a Bill Meyer on my oyther bike. Now, the Russel is to me what they claim - an all and every day, day after day saddle! Without question the most comfortable I have used on 100k+ miles.
Your issue could be the where you are sitting (on a long ride one will find several places to sit, forward and back - one cant sit on a thing the size of a bar stool all day and claim recliner comfort!). I would guess though that shoulder and arm are more ergo related .
Looking at the construction of the Russel, I dont believe that there is much they can do.