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 Hans Dölle. I modified some parts by referring to photos of the actual 8131-6 train. I engraved the number 3218 using UV printing, which is the number originally assigned to train 8131-6 in 1943. 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...