Well, here is how to see if the suspension is worn without removing bolts, which I'm sure most of you don't want to do. Especially since the bolts shouldn't be used again.
The trick is to measure the space between the suspension bolts. All four links should be the same. I now use a spare link to compare, (available from your dealer) but a good eye and a tape measure, or a little wooden or metal jig would also work.
First, the bolts used are shoulder bolts. Note the holes in the link are drilled to fit up on the shoulder, not on the threads.
When you crawl undeneath and hold up the spare link it fits loose over the threaded ends of the bolts. As the links and plastic bushings wear, the two bolts move further apart. The day I go under to check and the link fits tight or won't go over the threaded portion of the bolt is the day I re-do the links and bushings.
Hope this helps keep some of you folks from a nasty surprise!!