John- Dennis Olthoff and I discussed this at his shop last week and he said that there have been several different seats that SPF has used over their history. He said that one of them was even very tight for him, and he's a tall, but slender guy. Perhaps it was a seat like that that I sat in last year that caused my concern and my recent query. The other customer car I rode in last week at Olthoff's wasn't uncomfortable.
I think most guys my age carry their extra "luggage" out front, but others of us carry it in the "caboose", which can make for tight squeeze in some seats
