Bridge base plate doesn't lay flat; help/suggestions?

[ThudThudThud]

Is there anything wrong with the plate of the old bridge (pitting etc.)? If not, could you use that plate with the new saddles?

 

[BZadlo]

I see a few of them raised up once in a while when I occasionally repair a bass for friends.

It's usually from over tightening the mounting screws and the tail-side of the bridge is sunken into the body a little bit.

No biggie if it lays flat when the strings are on it and tuned up to pitch.

But overtightened screws on a wooden body can cause all sorts of interesting things to happen.

I know this is zombie thread but just did a search and this suggestion worked for me. I'm the king of overdoing it.
I tightened each bridge mounting screw until it was just snug, stung it up, tuned to pitch them tightened up (just a little more then snug) each of the screws and the bridge stayed flat. This makes me feel SO much better and now I don't have to use a high mass bridge on this bass. Just recently realized that I don't care for the Kickass bridge on this bass. I am a big fan of that bridge on many other basses though.