Whenever it rains, I find that about half of the caught precipitation ends up in the outer cylinder. This weekend we got 0.15", and about half of that was in the inner, half in the outer. I can't see how this is happening. I don't see any cracks in the funnel. And this is when there's way less than an inch of rain, so it's clearly not the inner tube overflowing.
Has anyone seen this before?