Esteban Gutierrez has urged Haas to think outside the box after failing to score points with a "quite conservative" approach at the Chinese GP.
For the first time this season Haas finished a grand prix outside the points as Gutierrez was P14, the first driver a lap down on race winner Nico Rosberg, while Romain Grosjean crossed the line in 19th place.
It was a disappointing outcome after the highs of Australia and Bahrain in which the American outfit amassed 18 points to hold down P5 in the championship.
Gutierrez has now called on the team to "experiment more" as they have a good base in the VF-16 on which to build.
"There's still a lot to work on, it's part of that which we are missing – we need to experiment more, to try different things," the Mexican racer told Autosport.
"I have to say that our set-up is still quite conservative at the moment.
"We still don't know exactly where we are or are 100 per cent confident that this is right so we can expect to have these type of weekends where our car isn't performing at the maximum.
"But the good news is that we have a good base and we'll work on it at the next events."
He added: "We'll go back to Europe, set the cars properly in the workshop, have them there in-house and the mechanics will be more placed.
"Right now it's all about going up and down, everything tight, time is on top of us and for the team it's not ideal.
"Obviously the guys are tired as well from two months straight. It has been very, very tough for them.
"Everybody is making a good effort and this is part of being a new team, we will have some bad moments.
"We will not be able to avoid them but we need to address them and we need to improve."