Maybe I'm expecting too much, little truck idles good, no funny noises, fresh tune up, but seems like a turd to me on our hilly blacktops around here. It's a '94 5 speed, 4x4, short cab truck with 31x10.50x15 tires. Motor is all stock (got a Flowmaster 40 on it) with 85,000 on it. were these...