I have older (late 80s?) recessed lights in the kitchen with the regular bulb and snap on trim. I would like to replace those with LED retrofit lights but it looks like all available sets are not wide enough to cover the "lip" of the casing. It looks bad to have one ring on top of another with the casing sticking out. Isn't there a way to cover those? I literally tried all available lights in Home Depot and Lowes. None of them have diameter that will cover old casings.