"We're not happy with how our game is going," McFadden said.
"I thought we did a fair job but, again, we're just making errors.
"We know where we need to go but we're not doing it at the moment so there's things we need to address.
"We missed opportunities tonight but we still scored 32 points so it's not a real issue if we can just stay composed."
Reducing those errors further would be easier once some more experienced players return from injuries and McFadden felt there were encouraging signs in Konrad Hurrell's game, in his second week back after a month out.
"We've obviously got some inexperience in our side," he said. "You put Sam Tomkins back in our side and a few others, [and] it's a little different. You've got those cooler heads in those key moments.
"Konrad was thrown in last week. I took a chance because he hadn't played a lot of footy but I knew that Konrad would turn it around pretty quickly and he'll only get better."
Captain Simon Mannering agreed that inexperience and changing selections had contributed to their inconsistency but was optimistic about where the side can go to from here.
"We haven't been perfect throughout our performances even with the ones we've won," Mannering said.
"We're slowly starting to build those combinations and play a little bit smarter with the footy - still a little bit inconsistent throughout the game - but it's early days and we'll be better for it."
The confidence-boosting win leaves the Warriors in ninth place on the NRL ladder, towards the tail end of seven teams bunched together between fourth and 10th spot.
They now look ahead to a difficult away match on Saturday against the Cowboys in Townsville, where they have traditionally struggled.
Last year's upset 20-16 round three win broke an eight-match losing streak in North Queensland, but the travel, heat and humidity are difficult hurdles for any side to overcome.
A settled team selection for a third straight week would help improve the Warriors' cohesion and bolster the team's hopes of securing their fourth victory.
Things we learned
1.
The Warriors can cut teams to ribbons when they play their best footy but need to learn to keep the foot on the throat. In a blistering 15 minute period they ran in four tries to go from 0-6 down to lead 20-6 before letting the Tigers back in.
2. Tui Lolohea continues to impress at fullback in the absence of Sam Tomkins. The 20-year-old scored a great try, threw a cut-out pass to put Manu Vatuvei over for his first four-pointer and made 8 runs for 111 metres.
3.Prop Jacob Lillyman played his best game of the year so far, racking up some big minutes and making 16 runs for 158m and 31 tackles.
4.Konrad Hurrell bounced back strongly after a sluggish return from injury last week against the Storm. Hurrell was at his bulldozing best right from his first touch of the ball and showed how dangerous he is on the inside line when he breezed through Luke Brooks before putting Lolohea in to score. One defensive blip and a silly penalty were the only downsides.
