hello i wish... I tend to agree with the "bike fit" idea. Saddle too low and/or a "fore and aft" adjustment will most likely cure your knee problem. I'm almost 9 months into a perimeter tour around the US, and I still tinker with saddle height.
And I checked out your blog. I LOVE your panniers and set-up. I'm now following you and I put a link to your blog on my blog. I'm also going to give you a shout-out and link, on my youtube channel. More people need to see your work Safe Travels!