I am fairly new to this site and on searching on Friday to see if there was separate section for Dethleffs was a bit perturbed by this thread. I contacted Richard and Jane who run the Owners Club and received the following reply which I am pasting with Richard's permission to allay any fears that the Club is defunct.
Rumours of the Dethleffs Owners Club's demise have been exaggerated! !
We have just over 600 members and we're taking 80 to the factory in Isny, near Bavaria.
Love to you both. Glad the T64 is still ticking your boxes. Sorry that Forest had a poor patch. Better now though.