Bought some new mirrors for my 99 750. Mine were missing when I bought the bike. The new mirrors didn't come with fastners so I've been to every hardware store looking for something that would work. A standard nut won't do as the mirror screws aren't long enough to pass all the way through the windscreen frame support. I found something that would work but I can't get it in 6mm. What do you guys suggest? I can only imagine what the dealer will charge for the original fastners.