Bob,
All very clear, thanks. I hope this will help others in the same position.
I was recently discussing the problem with Graham Kench and he raised the question how did/do those in “the colonies” manage? If 6s in Europe are overheating the problem must be far worse in places like South Africa and Australia but I am not aware of similar problems being reported from such places.
Does anybody out there know if the problem is as bad in those warmer climes? – and, if so, how do they cope?
B……