MRVP Insider: MRVP Underground with David Popp, Episode 9 – Wheels up By Angela Cotey | October 18, 2022 | Last updated on November 9, 2022 Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates This time, David advances the aging effects of his gons by working up (or upside down) from the wheels. Don’t miss his handy tips for painting wheelsets, weathering trucks, and applying decals!