I believe I had the same type of "abnormality", or something related to your problem. ECG showed "poor R-wave progression in V1 to V6", which software interpreted to be LVT (or RVT, don't remember which). My medical examiner got nervous and referred me to a cardiologist, who did Echo and stress ECG. He said that I was fine; that the "poor R-wave progression" wasn't significant in my case. (I'm also trim and exercise alot). Needless to say, it caused some sleepless nights for me until resolved. Since then I have read up on ECG's and have also learned that there is something called the athletic heart syndrome, which can also give some "strange ECG's" (pardon my non-medical terminology).