Speaking with somebody right now about a trade. If it fails I may try again with someone else. Anyone interested can PM me.
Also, does anyone know if a Bach slide will fit onto and Edwards bass valve section?
Yes the slides fit. Almost always perfectly fine, but there are some individual exceptions.
As making a dependent axial section requires the removal of some F attachment tubing, it is harder to reverse. Swap or replace with an independent is easier. What make is your dependent section?