My BR52 train WIP

I am currently building a BR 52. The base is the Rebrickable BR52. For the boiler and tender exterior, I reverse-engineered the BR 52 8131-6 created by Reddit user cL0uD1337. I modified some parts by referring to photos of the actual 8131-6 train. I UV-printed the number 3218, which is the number of the 8131-6 after it was shipped from the factory. The valve gears and rods are custom parts, while I made the chimney and some other parts myself. The power consists of one BuWizz 3.0 Pro and two...