Shift linkage problem
It all started when I began having trouble finding reverse. I drove it for
~1 month without it and then after hitting a significant bump on the road,
2nd and 4th gear appeared to be gone. I found that if I shifted to the outer
sides for 2nd and 4th I could get it into gear so I was able to make it home.
Shift linkage repair
It turned out that the weld on the shift coupler had failed. After cleaning it
up and welding it back on, shifting works good as new.