Kiwi Olympic legends Mahe Drysdale and Hamish Bond admitted that they are still adjusting to the physical demands of rowing in the men's eight.
Bond made his return to rowing this year after trying his hand in road cycling.
"It's hard when you don't have that memory backlog of what good rowing feels like which we obviously had in the pair," said Bond.
The transition has been tougher for 40-year-old Drysdale who has been off the water completely the last two weeks.
"I just had a stress reaction in my rib so you can't push it too hard, just the transition to rotating rather than going straight and quite different in a big boat," said Drysdale.
There are 12 athletes who are currently fighting for the New Zealand men's eight seats.