I will now go for titanium bolts when it is time to change the caliper bolts. My mind is at rest. thanks once again
unfortunately I hate facebook and try to keep away from it! I will try the usual suspect, pro-bolt or a different one called racebolt
thanks for the offer my friend. I won't be needing any bolts until the next time the front wheel comes off. Hope it will be a couple of years. So I wait till then