Since the 2017 season got underway, there's been a noticeable contrast between Renault's qualifying performance and its race pace on Sundays.
Nico Hulkenberg twice clinched a seventh-place position on the starting grid, in China and in Bahrain, but struggled to uphold a top-ten spot in race trim.
The culprit appears to be the balance of the French outfit's RS17 over a longer duration, a weakness tech boss Bob Bell is working hard to remedy.
"The R.S.17 is not as well balanced as we’d like over a full stint," Bell explains.
"Whilst you can get away with this over the course of a qualifying lap - where fresh tyres can mask the balance issue – the performance is less consistent when you take to the longer runs of race stints.
"We have a reasonable understanding of why this is and have a number of developments to address this in the realm of aerodynamics and suspension.
"We tested new parts - including a new front wing - in Bahrain designed to add more aero-performance to the car and also make it slightly more benign to engender better race pace.
"The big positive is that the car has the basic pace to be able to be qualified well. Our current issue is extracting that pace in a race scenario."
Renault nevertheless heads to Sochi with a positive outlook.
"We head to Sochi with a reasonable degree of optimism," Bell says.
"Our target is another step forward from our performance in Bahrain. We’d be happy with a similar qualifying position allied to improved race pace."
GALLERY: F1 drivers' wives and girlfriends
Keep up to date with all the F1 news via Facebook and Twitter
Under the pale winter sun of Barcelona and the desert glare of Bahrain, George Russell…
Peter Gethin, the man who secured perhaps the most thrilling win ever witnessed in Grand…
Aston Martin engine supplier Honda has publicly conceded what the timing screens in Bahrain had…
As the countdown to 2026 gathers pace, Oscar Piastri has reshuffled his inner circle –…
The Aston Martin F1 team will carry its name into Grand Prix racing’s future in…
Ferrari wrapped up a productive pre-season testing stint in Bahrain, leaving team principal Fred Vasseur…