Guys I have a set of Ultra 150 carbs apart and done it a few times, but This diaphram in one of the carbs is just not bounceing back like the other two. it is very nice and pliable and not stiff at all, but it just doesnt have the same bounce or spring as the other two as stated. I know they just keep the gas in the carbs so they wont leak like a street carb. Just never seen this before.

Thoughts please