PedalingWalrus: I have experience with eccentrics having set screws (grub screws) and expanding clamshell (bushnell). The BB is a separate piece common to single bikes that inserts into the eccentric. No experience with the type Rick mentioned and perhaps this is due to hollow BBs which I do not use. With both types I rarely need to adjust the eccentric (the BB cannot be adjusted, it is a fixed piece). When I do adjust the eccentric(s) (2 on our rohloff tandem), it is a simple, few minute operation which I can easily do/have done in the field. The cranks are not involved. I only say all this, because it seems you have a good bike with something annoying that can be replaced for a small cost versus a new bike.