There is another way to cure drift in the blade, assuming you have a blade that won't distort top-to-bottom in the cut: clamp a second fence the other side of the blade so that the gap is just enough for the wood to squeeze through between the two fences. Then as you feed the wood through it can't deviate. Of course with each cut you have to move your second fence in, but it saves faffing with drift angles and such. Often used for resawing on bigger machines.
The second fence can just be a 'point' e.g. the corner of a block clamped to the table - just make sure to aim the corner directly at the blade.
