I went through the same heart problems for decades, Russ. I had an ECG run in the late 1970's when I was in my early 30's.
By the time I was in my 50's I would get the palpitations,or a raising heartbeat, or I could feel my heartbeat jump or stop.
I had my amalgams removed in June 2004. My heart still runs a bit fast in the morning. I presume that is from the overnight settling of the heavy metals. By midday it is normal.
This is just one of the many symptoms that have really improved.
I still take about 20 different vitamins and nutraceuticals daily. This I do under the care of 2ND's.
I have not needed the assistance of DMPS to chelate in the last 4 months. I think it or one of the other chemicals are great for those of us who can tolerate them

My health is dramatically improved at age 60.

Al