Mike
Three greens were re-done: #3, #10 and #14. (I dont think there were any others...)
#10 an #14 were greens that have severe back-to-front slopes, and with today's green speeds, had very few pinnable loactions. So they re-did these greens, taking some of the slope out, and greatly increased the number of pinnable locations. If you know these holes, IMO, they returned them to the playability that Strong had in mind: still PLENTY of slope to deal with, still really important where you leave your ball, but very fair golf holes without some of the goofiness that you could get with "too fast greens" if you know what I mean.
#3, they had big problems with stream overflowing its banks and washing out front bunker, so they took out the bunker, raised the area and brought the green back closer to the stream. Now there is now a real scary set of front pin locations.