This is assuming the you have the blade aligned with the slot.
Delta contractor table saw fence adjustment.
Mounting design attaches to delta table saws including contractor saw hybrid saw and unisaw models three point locking system with twin hairline pointers to assure fence is parallel to blade and accurate to within 1 64 of an inch 0.
Slide the miter gauge to the front of the table and move the fence over to the screw head and insert a playing card between the screw head and the fence just so you can move the card as it touches both the fence and the screw head.
At this point the front is still clamped to the front rail.
Unisaw dado throat plate.
Using simple tools and some test cuts i m able to make sure the blade and fence ar.
Now you know that the fence is good in that position on the rails.
Unisaw standard throat plate.
Adjust the fence to be parallel with your miter guage slot at the front and back and re tighten.
Delta table saw arbor wrench.
Loosen the two bolts on the top of the fence.