My 027 layout with 27 Marx switches has troubles with the larger Lionel F3 diesels.
I have picked up a couple of Marx 1095 F3 diesels that run the layout just fine. This one has been repainted and decals added since most 1095 have that cheesy silver gray plastic with red mask painted areas. Repainting was a fun project. I have a ABA set repainted.
Picture of Marx 1095 F3 diesel engine repainted
Picture of Marx 1095 ABA F3 diesels.
Lets see some pictures of those Marx favorites. I started with Marx as a kid and still have a love of them.
Charlie