2 Vintage New Bright Greatland-Denver Express 1986 Train Set parts or repair

2 Vintage New Bright Greatland-Denver Express 1986 Train Set parts or repair. The d&W RR Denver Express will sound but wheels Will spin for a few seconds and stops. Greatland 1993 Wheels will spin. However it seems the rubber needs to be replaced. As well as it appears some parts have broken off. Great American Express Denver battery compartment has corrosion. Tracks included Two railroad road crossing Two long ones one with it on and off switch 8 straight. 1 is broken. 24 curved pieces. Please review all photos