I also had the offset adaptor for the metro clevis.
I didn't reuse it with the new one - I just have the pedal through the middle of the long forks of the clevis, with the pin securing it. You just need add a split pin through a hole thats predrilled at the end of the pin to stop it from working out.
Mike - I also don't mind paying a little more if it secures an a definite order.