Any terrier can ratch about on top and bush about to a decent standard,if its scared to enter and greet below its not worth breeding from.A terrier that is committed to work below will be more committed on top,fact,source a terrier bred from committed lineage and graft it as you like,above or below,90% of the graft my terriers encounter is above,the other 10% is what counts when breeding is undertaken,again graft them as you wish,owners perogative,a terrier that is useless below is useless to breed from,especially when it comes to Bedlingtons,the breed is awash with frauds,chancers and ego,s,a