The answer to all of it is not to box yourself into a corner ,never keep all your apples in one basket .Dogs do Jack through no fault of the breeder BUT as I've said many times on here its' what happens after that takes things forward not backwards .I know a couple of well known lads who would keep very poor bitches to breed from just because its' their stuff and should come right .I've always, without fail either culled it or kept it for rattlng only, never to be bred from .In fact I've probably been too critical in the past looking back ,not culling wrong stuff but not breeding due to minor