1983 K5. I have to use 4wd often to get up to my cabin. Keeps popping out of 4wh, which I'm reading is not uncommon. The lever seems to ride in a gait, and if I hold it to the right it holds it in 4wh, but the lever won't stay there on it's own. What's the deal, is the gait supposed to hold it from slipping out? Am I missing a spring?


