INTERNATIONAL TRUCK GUYS, Could anyone please help me out and tell me where you think is the best online or elsewhere repair guide or official service manual for my 1986 International Cargostar 1850 truck, or how I can get one OR access one? I found some CTS-4218 guide on eBay does anyone know if this is good, And if there is also anything online I can access? I want to go through this truck. Thank you guys. B, in boston ~love my truck!