Thanks for the offer Alec, and I will email you tomorrow if that's ok as its a bit late here in UK now. I am out all day tomorrow but perhaps Monday evening or something like that, but will arrange via email when is convenient for you.

I did see an older message on here by Tony Oakley that the spark killer is notorious for dying and to just simply remove it, so I wonder if that is what's happened here. But anyway, I will contact you as soon as i can,

Thanks again,

Tim