I'm curious how you've set the B17 up to reduce pressure on perineum? I went for a moderately long ride last weekend (about 5 hours) and came home with a lazy Johnson. ****, he was almost dead. Anyway, he's still recovering.
I gotta fix something, and don't want to trade the jewels for biking.
I've tried resting more on the sit bones towards the rear of the seat, but I sometimes forget and end up putting pressure on the perineum. Focussing on putting more of my weight into the pedals seems to have helped also.
Any other ideas??