Very many thanks to John who sent me all the decompressor bits he took off his XBR to allow me to return my mine to the standard, automatic setup.
I'm looking forward to clearing the manual lever off my handlebar, plus I'm putting bar end mirrors on to clear the view.
SteveC#222 sent the manual + lots of useful articles on CD soon after I bought my bike.
Moto63 sent a set of original clip-ons when I was trying out different setups.
None of these gents charged a penny, I am amazed and obviously chuffed to bits.
This site and the people on it are proper gold dust!