this gauge will help you pinpoint the trouble

Here is a Lionel 6-38867 O Gauge L&N Non-Powered Scale GP35 Diesel Locomotive #1114

This is an Atlas 10001860 HO Southern Pacific EMD GP40-2 Diesel Engine #7956

This is a Walthers 933-4001 HO 1959 Checker Marathon Taxi

Model Number: 106-0601

Walthers 910-7211 HO Golden West GVSR 50' 2-Bay Airslide Covered Hopper #508006 ProductID_12112415 this gauge will help youThis is a Walthers 910 7211 HO Golden West Service GVSR 50' 2 Bay Airslide Covered Hopper # 508006. Features: Limited Edition One Time Run of These Roadnumbers!, Prototypes in Service 1960s to Modern Era, Commonly Used to Haul Sugar, Flour & Light Powdered Materials, Correct 33 Turned Metal Wheel, Proto MAX(TM) Metal Knuckle Couplers. Condition: Factory New (C 9) Operational Status: Functional Original Box: Yes (P 9) Manufacturer: Walthers Model