Is there a designated Micro-Trains conversion for the heavy mountain? This is a beautiful model, but the factory-installed couplers are ridiculously toy-like, and they're mounted way too low by NMRA standards, so they come uncoupled under any measurable draw weight. I'm dyin' to get this baby converted so I can enjoy it's beauty! Meantime, it's under glass.
I can't answer for your loco, but I ran into the same problem with my
Spectrum 2-8-0. The M-T 2004 coupler has an offset shank that did the trick for me. It raises the coupler about 1/2 the height of the coupler from their 1015/16.