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Manor's Dave Ryan believes the team has not done a good enough job in supplying new recruit Esteban Ocon with what he deserves.
Ocon took over from Rio Haryanto after the summer break at the Belgian Grand Prix. The Frenchman has acquitted himself well since, but has also been let down by several mechanical and procedure issues.
Last weekend in Singapore, Ocon endured two lengthy pitstops through no fault of his own, and Ryan has now vowed to address the issues from within the Manor squad.
"The procedures were wrong, but I'm not sure which one just yet, so we need to look at the video and be very sure ourselves, and then once we know that we can work on it," Ryan admitted to Autosport.
"We had a problem getting the wheels on the car, and then we had to change to another set because we had a problem with the wheelnut.
"It was a case of one thing going into another really. It was one of those deals that was hard to stop once it started going wrong.
"But that shouldn't be the case. We should be geared up to deal with things that come along in a certain way, and we weren't in this case."
Ryan said that everything will now be done to ensure that the problems are not repeated, as Manor seeks to provide its rookie driver with the proper foundation his talent deserves.
"We didn't have a good race in Monza with him, and then we let him down again in Singapore with our pitstops, which was just disappointing because his last stint, with his pace on the tyres, was really good.
"Quite clearly we're not - I'm not - doing a good enough job in terms of making sure all our procedures and things are in place.
"So we need to look at that, we've all got to accept responsibility and just work on it. It's not through lack of effort. The guys are doing plenty of practice, we're working on it, but we're not there.
"Everyone has to assume and responsibility. You can't just sit there and say I told them. That's not how it works.
"We're a team and we work together. That's what everyone else does, we're no different, and we have to do the same thing."
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