I just looked in the on-line manual for the TS2412 model 0. Yours might be a bit different, but in this one, fence alignment starts on the top of page 22. It's a rather simple process, and the manual even includes a couple drawings to show exactly what needs to be done.
This might be a good time to run the whole tuning process on the saw. Most complaints I have heard on contractor's saws are solved with a good tuneup. Kinda like pulling half the sparkplugs out of your car, just doesn't run so good.
Dave