There's nothing wrong with different techniques, we are here to share such information, after all. I tend to be on the conservative side with my restorations, leaving a few scratches and dings vs. aggressively sanding, grinding, or re-painting. Beautiful telephone restorations by the way! I have a 302 on my desk here at the office, and a 202 in the living room at home. They are great, timeless sets.
