There is no noticeable wear where either bolt has loosened and scored the 'recess'. Mightily pissed off to say the least.
I have spent the entire time with the bike (2 1/2 years) doing a 7 mile commute over a deserted moor where, if the remaining bolt had sheared, i would have been very unlucky to have actually hit anything at all. (No trees, traffic, lampposts, barriers etc) However for the past 3 weeks i have been doing my new commute of nearly 30 miles each way along the heavily congested and f#####g dangerous M62. I do it either going and coming back in rush hour(s) or just going in it (coming back at 3am) I have had at least one 'oops didn't see you' moment each day and so yesterday took the wife to get a lovely new Toyota Yaris so that i could have the old banger when the weather was none too good. This must have been a sign! Only noticed the bolts this morning and thank god i did. I would suggest everyone has a good look round their bike slightly more regularly than i had done (until now when i'll be meticulous) The consequences do not bare thinking about.
Thanks for prompt replies.
Has anyone reading this got one of the CD Roms for the 1150 service. I now need one as i shall do the servicing myself. Good price paid.(By Yorkshiremens standards)