I just picked up a 87 4 runner with manual transmission and 4 cylinder engine. The 4wd shifter was stuck and wouldnt go into any gear, and the vehicle was in 2wd. I disassembled it thinking it was a bushing or a spring missing or broken based on internet research and when I took it apart it had neither. While trying to put it back together so I could go order parts, I think, pretty sure, I accidentally switched the position of one of the shifting links inside. After reinstalling the shifter, everything works perfect. My question is, are there some years without the bushings and springs, or are they unnecessary? If they are unnecessary, why are they there? Can I ride it like this in 4wd and be okay?