Hi Goshen,
I've emailed Kevin and let him know about this thread and the rebolting question.
I'm sure that he won't object to your rebolting proposal, it sounds sensible. His bolting of new routes over recent years is far more 'normal', particularly since he got a Bosch for his birthday a little while back!
But since he's still climbing, and hard, it is best to check with him. It may take a little while for a reply as the school year has already finished for him.
Michael |