I recently picked up a HVA 1640 30-06 which looks to be in excellent + condition...However, when I took the stock off I noticed some internal cracks behind the front screw right where most of the recoil happens. They almost look due to dryness but there are no visible cracks from the outside. I've heard that beechwood stocks have been prone to developing cracks on these rifles-is there a way to fix the original stock (bedding? adding a steel recoil lug?) or should I consider a fibreglass replacement stock?