My Neuro suggested that I switch to Rytary, I was having shorter "ON" times.

1 Stalevo 200 six times a day.
1 Sinemet 100 six times a day.

I started with 3 Rytary 195, nothing happened.
I increased it to 4 Rytary 195, it took 2 hours to kick in. I was "ON" for about 1-1/2 hours. I then became immobile, scared the hell out of me, never felt that.

I'm back on the Stalevo and Sinemet.