Actually, looking closely at the filter(see photo) it looks like there has been some kind of adhesive used in the past. There appear to be the remnants of it on the end 1/8 inch or so, and also along its length, presumably at a seam. So I am a bit tempted to use some kind of glue. Maybe Steelstik? Of course doing that would mean removing the old stuff off the end - not sure what would do that, maybe carb cleaner? Any further thoughts please anyone? Phil