Judge by the gap. Tooth to slab face at position C. Tooth to slab at position D. The tooth to slab position at D needs to be scraping the slab face. The tooth position at C should have a 2-4mm gap to the slab face.
Perform a deep cut to the far-left edge of the log (ensure you have water on the blade). You may need to skim this face again very slow if the adjustments are extremely out to start with. Once achieved position the vertical blade next to the face.