I'd get onto the split at the back of the forewood that would be a starting point seeing as its an RFI you could look at using a No.4 tie plate as I have seen MKIII's sporting the said plate others may chime about doing that along with repairing the split, also another hairline split going up the forestock near the trigger guard collar front may be nothing but always worth investigating.
PL has stated when making things right ensure you use aircraft grade epoxy when working with the woods.