This Premier set, 20-3438-1 (engine alone is 20-3437-1 I think), appeared in the 2011 Volume 1 catalog. In the catalog is says the engine will negotiate 042 curves. However, the MTH web site says it requires 072 curves. The engire doesn't seem long enough to require 072. I was hoping 042 diameter is correct, but I can also live with 054.
Does anyone have this engine? Can you tell me definitively what diameter track it requires?
I posted the same question on MTH's Facebook page tonight. However, I have received incorrect answers from them in the past, so I'd prefer to rely on answers posted here.
Thanks in advance.