the thing I've heard guys having luck with is to insert pillars. The Devcon or adhesive used to set the pillars supposedly takes care of that split around the rear pillar. You might want to do a little extra application on the mag well side too? When I pillar bedded my Pro Varmint the rear action screw hole split on me too (not all the way thru to the mag well side though). The Accraglass bedding compound I used took care of the split around the rear action screw. It's solid now. I have heard that the black PV model isn't made of the same laminate wood that the other ones are (I have the coyote) and are more prone to splitting apparently.
Wish I could be more help,
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