Quoted from sohchx:
Also I've got increments of numbers missing on two of my displays and the one that says 1ST is flaky on the first digit. Could I remedy these issues by rebuilding the main display board and if so which components are the most problematic?
Search for "dendrites" and find my post on this; then get your dental tool out and scrape between the wires that go into the bad displays (turned off of course). If you are lucky, the growth will not have migrated between the glass sandwich, and your segments will start firing again. I have saved a few Williams displays with exactly the same segment out by careful cleaning.