The treatment really depends on what the underlying condition is and none of us has enough information to answer that question. For example your ECG change could reflect a fasciculo ventricular pathway which would not carry a risk of tachycardia or a residual or second anterograde conducting pathway which may or may not be amenable to a repeat ablation. In my humble opinion the best approach would be to see a qualified Electrophysiologist who could review all of your tracings and your medical history and examine you and help you make a decision regarding the best pathway forward. An electrophysiologist is a cardiologist who has additional specialized training to take care of heart rhythm disorders.