I was at my desk trying to get a document out to meet a hard deadline as Roy chattered about the handbrake with me going "yes, Roy, sorry, I'm mega busy", so I have only a very garbled version of what is wrong, but he is the most expert mechanic that I have ever met in 25 years of running classic cars so whatever it is his diagnosis is more likely than not to be correct. I will tell you when I next see Roy what he says the problem is.
Now, all you strict originalists LOOK AWAY NOW. I am trying out a series one grille, because because.