On my '90 I have a key-way for the rotor. It was really sloppy last year so I replaced the rotor and key. Well it's sloppy again with very few miles on it. My question is, has anyone ever had this key shear off? I thought it was a stupid Idea to use a key-way on a brake rotor to begin with. I know I've broken my fair share of keys in my day. It would really suck to hit the brake and nothing is there. I would like to get a '92 or newer jack shaft and rotor that is splined but this will have to do for now. Just wondering. Thanks.