Terri, aren't you taking any Sinemet at all? Half a tablet of Sinemet 25/100 will make your toes relax in 20 minutes and do away with all other PD symptons into the bargain.

However, there is also the phenomenon of too much Sinemet, that could also cause "peak-dose dystonia", contracting your muscles and leading to toe curling.
It happened to me once while driving and I was forced to pull over on the expressway...a pretty stressful adventure.