Canberra coach Ricky Stuart said he has "massive concerns" about the reputation of the surface at Lottoland as he prepares his side take on Manly on Sunday.
Of primary concern this week the status of the right knee of fullback Charnze Nicoll-Klokstad after he collided heavily with Brisbane playmaker Anthony Milford last Sunday at GIO Stadium.
While Nicoll-Klokstad has been medically passed to play, it has not stopped Stuart wondering if the surface curse at Manly will continue.
"Yeah, there is a real concern for me, it's a massive concern for me," Stuart said.
"We've had some poor luck there before with an ACL with Dunamis Lui and Shannon Boyd did a medial (ligament).
"I won't play him [Nicoll-Klokstad] at 90%, I have got some good depth with Bailey Simonsson and Michael Oldfield, so if Charnze wasn't right I won't risk him.
"He won't do much today, but we've got another session tomorrow and Saturday and the medical boys have all assured me he'll be OK."
Among a pack that features names recognisable across the NRL, Lui isn't as famous but just as important as his contemporaries.
The 29-year-old has been one of the "unsung heroes" in the Green Machine's excellent start to the season according to co-captain Jarrod Croker, providing punch through the middle of the field.
Croker said Lui provided the intangibles needed for any successful team, toiling away while more famous teammates gained the plaudits for another victory.
"He was one of our best all last year and to come back from the injury he sustained the year before that really is a testament to Nami," Croker said.
"He's a quiet achiever and not a lot of people notice all of the little things he does in a game and how hard he works for the team on and off the field.
"Those little efforts to get extra ground or support teammates where a lot of people don't notice that, Nami is really good at it."
Stuart said Lui has found his stride at the same time as they rest of the team as they seek to take down a Sea Eagles side that has shown glimpses this season of being a better team than their 3-3 record suggests.
"From my experience with Dunamis he starts a little bit slow, which happened in the trials and game one and he's now found his rhythm," Stuart said.
"He's found the energy for the minutes he plays, he plays the odd 17-20 minutes [to start the game] and he's been a really big contributor in that area."