Thanks, I had that already but appear to have become temporarily blind to simple instructions. Who woulda thought you just had to slide it off? :D If I'd just stopped a second and thought, it would have been obvious. No more wine and fettling for me.
Thanks to everyone who offered help. I'll go and hide my shame now.
Oh, and Merlin are great. They did send me the correct fork and I'm an idiot.