warm clutch slips

Hello everyone, I am having a problem with my clutch slipping on my 94 ford ranger. Clutch, master cylinder, and fluid has been replaced and flywheel was resurfaced along with it. All the work was done by a trusted mechanic shop. The truck runs good for about 30-45 minutes then will begin to...

86 Ford Ranger 4x4 with a 2.9Liter and Manual from an 88 My son bought this truck in this manner. The truck has a solid clutch until it is driven 10 miles or so and then it will start to slip and loose it altogether. Let the truck sit a few hours and it will drive again just fine. Anyone...