I posed this question on the main forum and got no response, so I thought I would post it here to see if I could change my luck.
Many years ago I purchased an A-B-A set of MTH Santa Fe Alco PA's. These units were Proto-1 and back then the lead axle on each truck was blind (plastic wheels w/o flanges). I assume this was so that this set could operate on O-31 curved track.
I recently saw a Proto-3 version (stock # 20-20311-1 from Volume I of the 2013 catalog) basically the same A-B-A set for sale. Can anybody tell me if this version also has the blind axle? If so, is it the lead axle or the center axle? Has anybody successfully replaced this axle with a flanged wheel set?
Thanks in advance.