No ride today but I made bike position adjustments to David and my bikes. 

David has been experiencing lower back pain so I raised the saddle almost an inch (or more) and moved the seat forward.  It appears that David has grown significantly since the last time I checked his position which may account for his back pain.  It also looks like David may be slightly stretched out but this is mostly due to his racing/aero position.

After adjusting my bike position I rode about 100 miles and experienced only slight knee discomfort.  I didn't expect to need many changes but I had David check my position anyways.  David was able to confirm that my position was good except for the fore/aft position of the saddle.  We moved the saddle forward and my knee looks like it's in the right position.