1. Orbital Sander to clean off as much of the old finish as possible.
NOTE: DO NOT USE ANY CHEMICALS TO STRIP THEM.

2.Hard work but worth it, by hand to take of the rest.
3.Once you have them looking something like back to bare use glass etch to a finish.
4.Four coats of base primer flatten out between each this will highlight any cracks.
5.Two topcoat color of choice.
6.Two coats lacquer.
Finish is awesome

Hope this is of help