MagSafe issues

Hi. My Charger stops working occasionally. It used to be brief periods of time. It's getting more prominent.

The 3 middle pins seems to be a little more sunken than the rest. Their spring seems to be working however

I cleaned the connector and the power port

I tried both the AC plug and the three prong AC cord

AC blades are good.

No strain releif concerns. It doesn't help to wiggle the cable back and forth.