I know this is a rather mundane and maybe stupid question but anyway.
I picked up some used ultegra sl brakes and the recessed allen bolts are freakin long. Like 30mm long and they aren't very nice looking too.
Anyway I am mounting there on a 89 peugeot triathlon. The current bolts are a snug fit I am guessing that the mounting holes for brakes have been a pretty static size. I measured the length of the hole and it is 15mm(pretty sure). On loosescrews.com there is a 10mm recessed bolt. Will this 5mm make a difference or what???