A big thumbs up for the link on e-bay to the vents and to the replacement spouts. Dad has 5 or so cans that I converted and he's loving it. No matter what style safety can I hate the dang things. Slow, PITA and make a mess. Give me the old style cans and pay attention to what you are doing. Problem solved. I have a half dozen of the old cans, 2 have teeny, tiny vents. Those were drilled out and the black ones installed. Much better flow now.