I have to admit, you have done a very comprehensive bunch of work, more than most would have attempted to try and correct the fault and keep the system in fine fettle, so little else I could add aside from...the only thing that I would next...
Good new year cheer to yourself too Keith, As reliable as Diesel Jag X types can be yes! I hope all is well with yourself and work on your property in France is keeping you well out of mischief!
What Ho Fella, That gif did make me chuckle, I am...
Hi, Sorry for the tardy reply and thanks for the wonderful comments eluding to my knowledge - although I am not sure I am THAT much of a guru, just a battle-hardened L322 Vet.....
That said - whats the issue and I *may* be able to help!
Yep...