One of the members of the SeeMeCNC forum developed a new mount for the E3D version 5 Bowden for the Rostock Mount. The members name is 626Pilot and he has posted the mount on Thingiverse : http://www.thingiverse.com/thing:137140 If you are looking for a mount for your Bowden type E3D on a Delta Printer this is the one to get.