sorry you,ve lost me a little there
what i did was to buy a splined shaft from Rally Design, cut it in half & fit it into the rack end using a new "group 4 " coupling, the original rubber end shaft was then cut to remove the rubber bit then that went into the extension i made, so the triangle part(rubber coupling) is now fitted just below CP16 which makes it easy to remove the steering column without needing to remove the steering wheel section,
i have a few pics if that would help?
andy