Don't think I was edgy, definitely didn't rage much.
I am in a similar boat as far as heart pounding. These days my heart rate is mostly in normal ranges however the heart pounding is always present to some degree and gets significantly worse depending on stuff that aggravates my symptoms. However when I was at my worst I had both excessive heart rate and pounding.
Would your sensory neuropathy idea account for worsening heart pounding with things that generally aggravate POTS (too hot, exertion, post meal, etc)?