I have a 79 cb650 i just picked upm obly 2500 miles on it, and after 28 yrs of storage, needed a good carb cleaning. However I feel some may have previously disturbed the carbs, because one of the float bowl overflow tubes was brittle enough to break when my hand brushed it. And another one is cracked. But since they seemd to be pressed in, how can you get them out? Or repair/epoxy them back in? Can you get replacements? Are they just pressed in or screwed in or anything? Any ideas would be great.