Unfolding LG MAGIC MOTION Remote Control (AN-MR400): Dealing with Unresponsive Circle Button

The circle doesn't work for me. For it to work I need to shoot quickly. I'd like to take them out and see what I can do. But with its opening I get tired.

This remote control is with snaps.

I know, it's just a problem not to break them.
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Pilot unfolded. First, I took out the infrared diode cover. The problem was, because it needs to be bent - the risk of it breaking. Later, I was gently questioning from this cover.
The roller (made of rubber) worked poorly because it collected fat (dirt) and slid on the plastic ring.
I desoldered the roll, gently washed it in extraction gasoline, including a rubber ring. Then I gave budapren inside a rubber ring and waited 5 minutes. I put the eraser on a roll and left it for half a day.
After testing, I soldered the roll and folded the pilot.
Works like new.