Somebody on the UK forum posted this link to your forum, so I checked it out and its spot on, the same fault,
http://www.delica.ca/forum/auto-shifter ... tml#p59394
This seems to be the only two accounts of this happening that I can find, So I'm trying to get my module off, see photo taken from the above link.

but is solid, and I don't want to force it to much until I know what holds it on. I've taken the nut off the shaft and the 2 bolts that hold the metal bracket at the back, now should the module just slide off the centre shaft or have I missed something.
Thanks Ken.