Update!
While working with Thomas Ose of?OMS(re)models.com, who is very familiar with this system and a friend of mine. We have it resolved. I had to reverse wiring on the 4 5033s and configure the 5033s to disable auto reverse option, as others mentioned. Still don't understand why this wasn't a problem prior to the upgrade or with my previous Digitrax system, but it's working now, and thats all that matters.?
Thanks for everyones input.
Jim