I have a 91 f-150...auto hubs without the push button.....sopposedly throw it in neutral, apply break and shift from lever on floor.....it goes from 2 to 4x4 high...cannot get lever to move to the left and down to 4x4 low...sprayed and checked linkage, seems to be straight. The truck sat for a few years inside of barn before purchased....any ideas? possibly crack open the transfer case to see if binding inside, get a bigger hammer...lol anyone with ideas that can help , please e-mail me or post...thanks..