Hey, sure. I didn't think anyone wanted to hear about my problems (tee hee).
My tuning problems are almost exactly what was outlined in Jemsite's "Why Can't I Stay in Tune?" section dealing with bad trem post symptoms. Once tuned to pitch, notes can be bent with the left hand 'til the cows come home, but ...
... Lowering the pitch with the trem bar and then returning to neutral causes the strings to return flat (the G-string far more than others). Raising the pitch with the bar and then returning to neutral causes strings to return sharp. However, raising/lowering with the bar and then "fluttering" it back to neutral corrects all pitch problems.
Example: Guitar is set up, locked down, and tuned to pitch. Open G-string returns "G." Do a dive bomb and calmly return to neutral, open G is now G-flat. Without touching a fine-tuner, immediately pull up on the bar and calmly return. Open G is now G-sharp. Again, without retuning, immediately smack the bar and let it go ape. Once the flutter stops, open G is now a perfect G again.
That seemed rather consistent with what was indicated elsewhere on Jemsite for trem post problems, and it had been suggested to change the posts on older guitars (and even once a year on players as maintenance), so I figured I'd give it a go.
The only thing that might be inconsistent with that is the fact that, while all strings are affected somewhat, the G-string is FAR more affected than the others.
I've centered the trem float point as indicated on the site, and just performed an intonation adjustment over the weekend (I'm confident that the G-string saddle is as tightened as it's going to be). I've torqued down the bolts on the nut and neck joint. The only thing I haven't done on the trem is torquing down the bar retainer, which is just loose enough to cause some wiggle and clunking (I was planning on fixing that while the bridge was out of the guitar during the post change). Outside of a microphonic single-coil, the trem pitch problem is all that's left.
That's what brought me to start inquiring after the trem posts.