I'm in the process of a complete overhaul on my '98 Guerciotti. When I bought the frame, back in 98/99, I was told it was completely preped. Well, I noticed the fork crown race on my Record headset was cracked. Over the years I've purchased many frame tools and now I do all my prep work. I checked the crown race seat with a Campy go/no go guage and it needs cutting. My question is: The seat is chromed and I do not want to destroy my nice VAR cutter on the chrome, so how do I remove the chrome? I read that it should be filed off. If this is right, how do I not go too far with the file?