Hi, and thanks for your recent help. A couple of years ago I was gifted a Hornby class 50 045 loco - R 2350. I tried a couple of decoders, but it wouldn't work. After checking out this forum, I sent the circuit board away to be modified. I haven't seen it since! Is there a (modified/updated) replacement part, and if so, what is its part number? Thanks in advance 👍