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E2: Thought I'd made a mistake but hadn't. It was correct, but the cube didn't finish in WCA orientation so I had to add a pre-rotation to fix it. It seems to match the correct scramble now.
Congrats! He set it a Cube for Cambodia 2018 on the Angstrom Gan Air SM. He said it was an X-cross, smooth F2L and an easy OLL and PLL skip. He also got another sub-5 in the avg but it was only a 6.29 avg.