How I Do It | Fixing Speed Matching on the GP7u's

I'm fixing the speed matching for my Athearn Genesis GP7u's. One of them had different CV numbers when new and needs to get redone to match it's partner. Checkout Lance Mindheim's book about switching layouts at my Amazon Affiliate link here: https://amzn.to/3kIDz04 For more fun check my playlists below: Operations sessions:    • Operation Sessions   Layout updates:    • Layout Updates   How to videos:    • How I do it (How to videos)   #athearn #modeltrains #trains #HOlayout #hoscale #models #hobby