No worries, if you do get up to that 1/2 car of yours let me know, and I'll see what I'm doing, i have family in Albury i should probly visit one day.
As for your wheels, i have done a bit of digging, but at this point, I'm stumped, they are definalty the self propelled stile, but the teeth were suposed to be part of the integral cast, and yep, they are most definatly not! If i find anything out, I'll let you know.
