Bike fit / correct riding position

I'm no bike fitter so take what I say with a pinch of salt, but from what I understand, most people require some degree of arch support. Most shoes ship out with insoles that provide close to nil and hence most people would benefit from getting some with some support. How much you need is a little tricky to figure out unless you have one of those fancy esole type insoles which let you swap out different arches. A bike fitter will have a large range of heights to try.

The reason your knee tracks in is due to the lack of a platform for your feet to push against, so your feet will roll inwards. If you conciously force yourself to track your knees straight, you will be loading the outside edge of your foot and most likely end up with sore feet. Wedging will help too if your feet naturally sit at an angle that isn't exactly horizontal. And of course if you have muscle imbalances that doesn't help either.

Makes sense.
I'll see how I get on with the new shoes as they are. Which is very supportive around the arch while not be uncomfortable to my flattish feet.

If I hadnt fitted the external battery where I did. Which lead to me seeing the inwards track of my knees. Which led me to asking on here. Which lead to your interesting answer. I would be cooking my bonts and pressing out the arch about now.

Considering my plans for 2014. Tis could have been a lucky break for my legs.

Cheers.