Hi callmejohn (I like that) sorry I can’t offer much in the way of assistance other than wondering if youcan try them yourself at a an adaptions approved workshop near to yourself. The other small benifit of my post is, it also puts it in the “recent replies” section, where it has twice the hope of someone seeing it by some one who can help.
P.S Nice list of cars you have had on the scheme, some I remember as a lad, such as the Invacar and Daf Variomatic an Uncle had 🙂