While the PRR L1s Mikados were built with alligator crossheads, all were changed to Laird type in the 1920's. The Kato Mike has alligator crossheads and I have not seen one complaint in all the years the GHQ kit has been out there. At least the crossheads are right on the Bachmann Consolidation for PRR H classes. The Valve gear is OK, it's the valve gear hangar that is different. So is the valve gear hangar on the Mikado.