I have read a lot of posts about those shifter cable bushings, it sure seems to be a common problem. Everything I've read says to access both ends from under the car but if you can install the front bushing from the top and it went in ok, I wouldn't think that would have anything to do with it not going into park, but that does seem to be the smoking gun. What brand bushing did you install, and did it seem to be a good fit? I'm very interested in hearing how it works out because I may need to do the same repair on my 2007 V. I've had it for about a year and the shifter works fine with one exception, when I shift from drive back up to reverse, I have to go a little past reverse for it to lock into gear. This may just be a little out of adjustment, but I won't know that until I inspect it. Either way it sounds like just a matter of time before I'll need new bushings also.
Good luck and please keep us posted on your progress,
Dennis