I got the great deal on the U30 Unifence, opened the pkg and looked over the pcs. and the instructions. The question I have is that to install the front rail it states to line up the "zero" with the right edge of the saw table, but this seems to be off about 1"-2" to the right of where it should be. I haven't begun to install this yet. Does anyone have any experience with this on an older Craftsman contractor saw? How did you approach installing/alligning the front rail?