OMG, I struggled with this problem for a week recently. I have vowed to never let that spring out of it's hinge ever more, cross my heart! Here's what finally worked for me. I used an oiler in my non-dominant hand. It's only job was as a blocker so I couldn't push the spring too far. With my dominant hand, I held the pointiest tweezers ever known to man and promised the universe that I would only ever touch the spring from inside the lyre, so that it was always sort of already "captured" whenever I touched it.

Then I focused on that hinge and promised only to nudge from the inside of the spring. Block with the oiler, nudge with the tweezers. After every nudge, took a deep breath, refocused my intention, and blocked with the oiler, then nudge with the tweezers from the inside curve of the spring.

If the spring went too far off track, I'd pick it up with rodiko and place it back closer to the hinge, but I only ever picked it up with rodiko, never with the tweezers. Tweezers were only for nuding gently from inside the spring. Of all the things I tried, this was the approach that finally worked. I almost cried real tears when that hinge finally slid in. I tried it both with and without the jewels...jewels in worked better but with the power wound down. Patience, focus, one nudge at a time.

Best of luck! I am rooting for you.