I’ve been using SPDs for the past two weeks and since the first proper ride with them the back of my left knee has been really aching each pedal stroke. The right one is fine but I feel like the pain is stopping me putting much effort in on the left leg so my speed is probably suffering..
It doesn’t seem to hurt when standing up to pedal so I’m thinking maybe the seat positioning is wrong (though I never had this problem on flats). It can’t go forwards any more (without buying an inline post) which it feels like it may need to as my knee doesn’t quite line up with the centre of the pedal axle. Though if this were the case wouldn’t it happen with both legs? Any ideas?
edit – it’s a road bike if that makes any difference.