Your a gentleman Fred. More than a beer here for you if you come down to the sensible part of the world. Have a selection of bikes to ride and a big house to stop at. My email is
steve@safetystep.com.
I only have the B model chambers, S ones hard to come by here, and don't think it is worth the effort to cut and re-weld the B pipes. Are the specs you have for the S or a highbrid pipe?