Guilty of what! Neil?......................Believing everything that an old-timer tells you?....three times repeated a mating, no problems!. Sleight variation of the coat between the three litters. Pups I kept back, all became sensible, reliable grafters.................................... So there you go, Do you have any solid proof that it is detrimental to repeat or is it just "hearsay"..................................and "if", it is hearsay,gossip,old wives tale should you really spout it off as "Gospel"