I'm looking at a Chris King headset for my build and got lost reading install info on his site which called for having the head-tube faced. The last bike i built was back in the 80's, BMX stuff so this is actually something I have never heard of. So, I set out to buy a facing tool because I really enjoy working on bikes just as much as riding. Whoa, $300 plus for a good tool, that was for the head only, BB set up is additinal. :eek1 I totally understand the principles but wondered if it was truly necessary. What did the shop charge you for such a service?