Vbeam Perfecta for port wine stain without purpura? (Photo)

It has been five years since my last treatment, which was a disaster. Two weeks of bruising, scabbing, and bleeding with no results to show for it. It was a Vbeam. I want more treatments because I can't have this get worse. I'm 31 and age is not going to help. I cannot have purpura like that again, however. Will sub-purpuric settings on a Vbeam Perfecta give me any results?