I have a new sharp blade and currently have no blade drift. However, as the blade dulls you may notice some blade drift.
To compensate for this, I simply made an adjustable miter gauge slot for the bandsaw sled to ride in.
I used some ¾” PVC board (from Lowes) and routered a slot in it. The pictures show a 1 ½” wide PVC board. I would recommend using a wider PVC board to provide more stability.
On my bandsaw I had attached an angle iron on the back side of the bandsaw for clamping on my fence.
I use this angle iron to clamp on the adjustable miter gauge slot. Use a 3/16” flat head screw countersunk in the slot. Use washers for spacers to match the thickness of the angle iron.
Install a steel ¼” pin for a pivot point at the blade location.
Drill a ¼” hole in the table of the bandsaw just to the inside of the bandsaw’s original miter gauge slot. This hole will be in line with the teeth on the blade.
You will need to put ¾” boards under all the feet of the sled rails to raise them up to match the height of the new miter gauge slot.