Also, outside frame locomotives were considerably large for the narrow gauge. I've read that when Baldwin designed the K-36's the took a small standard gauge 2-8-0 boiler and designed a 2-8-2 frame for it. The smaller drivers shorter wheelbase required the use of a trailing truck. No small wonder the home built K-37's were the same concept. To top it off two of the K-27's went south to Mexico where they were converted to standard gauge!
Guess most of ya'll already know all of the above!
-Stan Fischer