I am getting used to riding clipless. I tried about 4 years ago and chickened out, but this time, so far, so good. However, I think the tension is too tight because I can only unclip when I have weight on the foot. I can't unclip when my foot is on the top.

I have Shimano SPD PD-M505 pedals and have read the directions about 12 times. I understand the turn counterclockwise part but am being terribly dense when it comes to the "red indicator." I don't see the red indicator moving at all. I want to make sure the 4 adjustments are about the same.

I am a light female rider but (at least I thought) am fairly strong.

Does anyone have these pedals and have a clue how to adjust or what I'm doing wrong with trying to unclip?

Many thanks.