Finally had time to investigate the issues with this little beast tonight.
happy to report that I managed to get one from the "good" batch, tested pre-shipping to Aus by the supplier (now sold out).
Runs like a charm, I added DCC and it creeps along even better than my prized 57xx from B. Points no problem, faintest wheel slip on a more pacy start but no problem as this is perfect for my flat single Autocoach demand.
What I would appreciate is any tips regarding access to the axles, I removed the 3 screws but the bottom plate was reluctant to move far except for a few mm at the rear. I'm guessing some lugs are holding it firmly in place