Thanks for (in the main) words of encouragement, I have taken the executive decision to put the bike to one side for a while so that I can glare at it / call it names while I concentrate on some other stuff.
I am not one to give up easily, and if I do decide to get shot of it, then it at least needs to be running.
As Nigel B said "it is just a machine".....
Who needs a signature anyway......
Thank you for your support...