Hi David. I've posted here as I didn't want to hijack the 03 thread. I'm interested as to how you added the pick ups to your 03 as I've tried to do the same to an early Bachmann/mainline chassis and struggled to solder anything to it.
I drilled and tapped the chassis, maybe 2mm or 8 Ba and used a suitable bolt to hold a springy brass strip. It was a very long time ago. I will try and get a photo on Thursday when we have our next running session. Cheers David