Remember the big warm-up mid March? A 10-15cm thick layer of melt freeze grains 60cm down did not lock-up in the subsequent storms and drop in temps (insulated by the storm snow). I suspect this layering is most pronounced in the mid-elevation easterly aspects. Wet slabs are notoriously difficult to forecast but this layering may be something to keep an eye on.

Note black lines showing the unconsolidated wet mf grains.