I too have PD on my right side, and also had a problem with my pinky toe. My right foot tends to curl inwards, but always did due to a clubbed foot which was corrected 47 years ago and then 27 years ago with a metarsal realignment procedure.

When the PD was first showing it's head back in late 2002 amd early 2003, I was blaming the right foot turn-in on regression due to the clubbed foot. All of the exercising I did couldn't stretch the foot and leg enough as it seemed. While "on" the foot feels good, but when I'm "off", the foot feels tight just like the rest of my leg.

The stretching exercise that I did when I was younger, and still try do every day, is a simple Achilles heal stretch.

I lean against a strong flat vertical surface such as a doorway while I putting my foot square and flat on on the floor, and placed as far back as possible without hyperflexing the knee cap. I try to stay in this position for up to 15 minutes if possible.

John