Charles Leclerc has conceded it is "worrying" that Ferrari has yet to solve the problem with his car that affected him during qualifying of the Spanish Grand Prix.
The Monégasque appeared to suffer from a lack of rear-end grip, with his car visibly twitchy during qualifying. He ended up 19th on the grid and finished outside of the points on the race day in 11th.
Leclerc suspected that the car might have been carrying a problem all weekend, but has now confirmed that a post-race inspection did not show anything wrong with his SF-23.
"This is the first time that it happened in my career," he told media, including RacingNews365.com.
"If I look at all the left-hand corners, that's where I was struggling and I said it straightaway after qualifying.
"[Then] we could see that on the data that I'm losing some six-and-a-half or seven-tenths in all the left-hand corners, but there are no real reasons for it yet.
"This is a little bit more worrying and that's where we need to push and try to understand the reasons, because the feeling was really, really bad."
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No miracles expected at Canada
Despite introducing a raft of new changes to its car in Spain, Ferrari has not brought any new upgrades to Canada.
Leclerc does not expect any miracles at a track that is notoriously tough on tyre wear but thinks the team can understand a lot from the data it will collect.
"At this track we don't have anything new so I don't think we'll have any miracles," he explained.
"But we need to just try and understand more the way we should set up the car in order to maximise our package.
"In Spain we were quite easily off the [setup] window and then we're losing quite a lot of performance. We've learned a lot and I'm pretty sure we'll be in a better place for this weekend."