Pain in right leg, related to asymmetric leg position?
Before you start looking at bike setup/fit and/or different bike parts I would get your flexibility assessed. With one knee deflecting nearly a 1/2 foot more than the other, this suggests either underlying flexibility issues or functional issues. A bike fit can help to some degree to mitigate the issue, but a good fitter will also tell you that modifying bike fit is no substitute for fixing any underlying flexibility/functional issues.

Knees do not take kindly to off angle loads, in fact neither do most the joints in our legs and hips.  Often flexibility issues can cause us to modify our pedal stroke to compensate, including knee deflection, which can lead to repetitive stress injuries.

Do you sit down a lot for work?  This combined with cycling can really do a number of hip joint flexibility, which can have far reaching functional ramifications outside of just cycling depending on how your body compensates for any lack of flexibility.

Do you have a regular stretching routine?  If so, good.  If not you might need to consider this (especially hip and hamstring flexibility) as part of your regular routine.

Do you release muscle adhesion (and potentially muscle shortening) in your legs? - Sometimes referred to as muscle knots, these can also affect range of motion and therefore realized flexibility. Self-message (e.g., leg rollers) can be used to release these.  IMS treatment also works well.


  Anecdote:  Muscle adhesion and shortening in my upper quad were affecting my range of motion through the upper portion of the pedal stroke causing knee defections inwards (my compensation behaviour) which resulted in IT band issues (outer knee and outer hip discomfort).


Above all I would consider getting an assessment from a physiotherapist who can identify functional mobility issues. This is the best place to start, especially considering one knee is deflecting out nearly 1/2 foot more than your other. When one knee tracking is this far off, it is only a matter of time before repetitive stress injuries arise. Bike fit changes can compensate, but the issue will likely re-emerge especially if there are further change to flexibility and functioning. Once issues are identified, you will likely be given strengthening and stretching routines to help address the issue. It is worth sticking to them for long term health.