The lineout continued to be a real headache for Ireland during the weekend's defeat to England.
Second row James Ryan, also Ireland's lineout caller, believes "fine margins" are what separate them from solidity at the set piece.
"We get an opportunity five or 10 metres out and what looks like an overthrow to everybody else isn't an overthrow to us," Ryan said during a press conference on Wednesday.
"That movement is about two feet [further] forward than it should be. The throw is correct and it's the throw Ronan [Kelleher] was throwing all week but because we're further up the line than we should be, it's an overthrow. It's little things like that we need to fix.
"The other side of things was thought maybe we had too [many options]. We build up a menu earlier in the week and maybe it's about simplifying it and taking more off it so we can be really good a small amount of options.
"Another learning is that maybe we need a bit more variety, a bit more movement at times so don't always have to drive against these big teams.
"I hope that paints the picture that there are a number of learnings we'll take from it."
Just as he did at Twickenham, Ryan will again captain Ireland on Sunday when they face Georgia in Dublin.
"Once the game started itself, I kind of forgot I was captain," said Ryan.
"If I wasn't dealing with the ref, I was just doing my own game.
"The game itself, how it went, I'm proud of the lads in many respects. We fronted up massively. I thought we defended really well at times but we just weren't clinical enough. We're getting opportunities from creating pressure. We just need to nail those moments.
"At this level, if you've got four big moments, you've got to take three of them. We're trying to find that clinical edge. It was a bit of a mixed bag.
"It was a relatively inexperienced side in comparison to some of those [England] guys who've been together nine or 10 years.
"Guys like Caelan Doris really stood up. While we didn't finish the opportunities [that we created], I thought we kept slamming the door. We kept working hard from each other. We'll take massive confidence from the physicality that the lads showed. The next layer of that is about being a bit smarter."
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