Received my re-worked board today, I have played about 10 games. Thumbs up so far. With the previous boards, they would die around the middle of the second game. My Shadow King had even stopped turning the playfield blue (the whole reason that mode rocks) but with the board working correctly my blue playfield is back! Who knew that Nightcrawler popped up during Rogue?!!! I even had one successful Nightcrawler mode - that has NEVER happened (board died before nightcrawler mode ever started.)
So finally after 1 new cabinet, 1 new backbox, 1 new I/O board and 3 new aux boards a little over 3 months after I initially received it, I have an XMen LE that works!! Thank gawd!