Replaced the broken shift tube, plunger and bushings.

Can't get it into Park or reverse without lots of fiddling. Just feels like it's not engaging completely. (This was a problem before the shift tube and plunger broke.)

Is there a way to adjust the linkage or cable or ? to engage the gears the way it should.

 

If you follow the linkage down to where it goes into the tranny there is a little plastic piece over the linkage that pops into a link that is on the tranny. That plastic piece wears out and can make it tough to get into the proper selected gear. Give that a look if you haven't already.