My 74 K5 seems more squirrelly than it ought to on slick/snow covered roads. If going down a steep incline in 4wd sometimes the rear end is trying to pass the front. I have a modified (not full time) NP203 transfer case. Is there any kind of adjustment or gear change, so the front axle pulls at little faster, or would this be undesireable. Is this just the way K5s are? I notice my long bed work truck does much better on ice or snow covered roads. The K5 seems like I really got to take it easy or lose it.