I've come to the conclusion the CDI on my XBR is shot.
You tap it, it works, you tap it, it don't work!!
I've trawled for many an hour looking for CDI's and yes there are some on e-bay that are second hand and just as old as the one on my bike and selling for fifty quid up wards (you can only ask yourself is it worth the gamble?)
I've contacted David Silver spares and got the reply, they are discontinued
What to do next?
Does anyone know how to get my hands on a CDI for my bike that wont cost me a million quid for something that looks as if its just been dug out of the ground?
I've even considered the XL600 one, but it's the same story