HughesNewbie -- On another thread I mentioned that at the beginning, my symptoms developed rapidly, too. As soon as I started taking a dopamine agonist, they disappeared, and I returned to normal for quite a while. Over the years (16 so far) the symptoms gradually returned, and I am now taking more meds.
For balance, I have found taking Tai Chi classes very helpful; other forms of exercise work for other patients. However, you may not have time for that, since I think you are still working.
Like Semele,I have had no side effects from my medications. Now I am even taking a small dose of Sinemet and have no adverse effects at all. My case is not yours, I realise, but I think it would be wise to consider taking at least any medications your doctors offer that are known to slow the progress of the disease. When rasagiline (Azilect in the U.S.) first came on the market, I began taking a small dose daily (only half the usual dose). It may be one of the reasons why my PD has advanced so little in all these years.
My best wishes once again, J