I recently bought a nice set of Lionel postwar Santa Fe 2333 F3 engines from 1948. Unfortunately, they have repro snap-in porthole lenses. I’d like to replace them with original lenses but understand one needs a special tool to do this because those lens were flat and don’t just snap in.
If you have experience with this, I’d like to know if this is true. I see a listing for original lenses that says you can soften them in warm water and get them in by hand, but I’ve not heard of that before. Any and all advice would be appreciated. Thanks