I have a Dewalt 746 tablesaw (pre fancy blade guard and splitter) that I keep at my daughter's for work there when I visit. The last time I was there I noticed that the fence was quite a bit out of adjustment. At that time I did not have time to adjust it, and fortunately no incident occurred when I used it. I went on the Dewalt website and read the manual for the newer saws (can't find mine). The info in the manual is limited at best. Can anyone tell me what fasteners need to be lossened to make the adjustment? Should I expect the rails to be bent?