Leinster and Ireland scrum coach Greg Feek has expressed his sympathy for referees trying to manage the new scrum laws.
Feek believes that initial problems are to be expected as players and officials adapt to the new laws.
The new scrum initiative of "crouch, bind, set" has been received with a mixed reaction so far, with a new focus on ensuring the ball is fed straight into the scrum.
Feek, who won ten caps for New Zealand between 1999-2001 and made 63 appearances for the Crusaders, commented on the new laws after Leinster were left bemused last weekend.
Hooker Sean Cronin was sent to the bin after a series of failed scrums, with Feek instead being sympathetic towards the officials rather than critical.
"I've watched a lot of new games with the new laws and you see the referees are trying to police it," said Feek.
"It makes it difficult for them, especially when they're presented with something new.
"It's the same with the players. No-one says you're an expert in anything. I think if we can learn from this we can see a gradual improvement, and that would be good."