In our exclusive clip, Chmerkovskiy drops in on Murgatroyd and Viall's rehearsal for Monday's show, and gives some pointers. And Viall, 36, is all for it.
"I have the benefit of Maks coming in today, he's being gracious with his time and teaching me some of his Maks ways," Viall says. "Being Maks is a lifestyle and I think I can pick up a few things from Maks."
Viall also points out how helpful it is to have a male dancer's point of view.
"It's interesting, a guy teaching you how to dance is differnt from a woman," he shares. "Maks is obviously teaching me from his point of view as a man who knows how to dance, and while Peta is a fantastic dancer, it is kind of helpful sometimes to show, like, the guy's intentions and kind of the things that Maks thinks about. So, it's very helpful to have him here and show me a thing or two."
Meanwhile, Murgatroyd knows just how much is on the line.
"This week is huge, OK, let's go big or go home," she says.
ET spoke to Chmerkovskiy last week, when he admitted he was "pissed" at his and partner Heather Morris' shocking elimination.
"Well, I mean, we've had a few [surprising upsets] in 24 seasons of the show [but] I just never thought that one of my [partners] was going to be a part of that shock," Chmerkovskiy said. "Brandy [Norwood] and I didn't make the final [in season 11] when I thought she was one of the best dancers that season, but [that] wasn't as shocking as this. This is crazy."