Reply by Sawkerf

Where do you position the push stick? Loren’s suggestions can all cause this problem, but it’s also possible that you’re “steering” workpiece away from the fence because of where you’re positioning the push stick. Ideally, the push force should be directly in line with the blade. When it isn’t, you can introduce a bit of lateral force which wants to “steer” the workpiece. The further your force is “off-line” the more pronounced the lateral force.

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