I'm glad the new cage is working much better for you
As for Sora and Riku, they are still very new and the new cage is unfamiliar to them. They will need time to settle into this cage now, so it's important that you treat them as if they are entirely new budgies.
Approaching them slowly is essential, and don't try to touch them or reach your hand in for at least another week (or more) so that they are able to get used to their new home.
During this period, you should sit by their cage and read out loud or talk to them so they get used to your voice and resume their normal activities even as you sit there.
Once they no longer freeze when you enter the room or sit by their cage, you can start putting your hand in, first as far away from them as possible, at the bottom of the cage. Moving at their pace is essential or trust will be hard to build, so only move your hand closer when they don't seem bothered by it anymore. This may take a few days.
As you progress, they will trust you more, but it will take some patience.
Best of luck and I'm sure that Riku and Sora will settle in soon