@Lou1985 posted:GN 4-8-4 right? The worm shaft for a SP GS 4-8-4 should fit that locomotive. The worm shafts between my SP GS, ATSF, and UP FEF Northerns are the same. Best part is the SP GS worm shaft is still available from MTH.
that's the exact one I was going to try! Thanks. It takes away the guess work on my end.
I bought another engine ( 3 rail) that was supposed to be a working sample to swap out the parts for. Trouble is that it's the old 5 volt set-up, no board inside, and I overpaid for it.
At this rate, I could order a brand new working PS3 version and save some grief.