Well its been a few months and I have since had the DO35 serviced at vehicle components and is now back on the camper trailer looking almost new, I now use a small carabiner as my double check as I push it up over the knuckle so I dont miss it again
And the water tank went in without too much fuss and in the process I swapped the fill pipe over to the smaller of the tubes so it now has the large bore as a vent, something worth considering if there are any CC owners out there that are worried
Garry