Thanks for responding.
I have been visiting a cardiologist for several years now, and do the regular yearly ultrasound exam and an occasion stress test. He keeps reminding me to reduce the intensity of my riding which I have.
I have worn a 24 hr holter in the past which did not show a problem.
When I talked to him recently about the increase in the PVC frequency he suggests the 24 hr holter. The problem is that in order for the PVCs to appear requires some intensity which means sweating and that causes the electrode suction cup to come off there position. I don't know if there is some special tape to prevent this.
After these test I am going to visit an electrophysiologist