Broken again

It seems I have nothing but bad luck with this bike. It has gone back in to have its engine checked out as it is only starting on one cylinder, yet when warm runs on both. So far the guys at Nick Robinsons haven't found the cause of it. Here is hoping that when they do find out what it is, it is a cheap fix, though I have a funny feeling it won't be. Just my luck really. If anyone who may read this has any ideas let me know.