Thanks Ron,
I forgot to mention in my posting a warning about suddenly stopping Sinemet or Mucuna.
Your suggestion to looked up NMS explains it the best:
Neuroleptic malignant syndrome (NMS) is a life-threatening neurological disorder most often caused by an adverse reaction to neuroleptic or antipsychotic drugs. It generally presents with muscle rigidity, fever, autonomic instability and cognitive changes such as delirium, and is proven on a raised creatine phosphokinase (CPK). Rapid and large increases in dosage can also trigger the development of NMS. NMS may also occur in people taking a class of drugs known as dopaminergics when the dosage is reduced (i.e. Levodopa).

Thanks again,
Max