I tried out my new-to-me BPW today. It seemed to work perfectly. When I got home, I put it in a tub full of water to rinse off the chlorine water. I dunked it and let it soak. When I went to take it out, I found that it had probably 2 cups (roughly) of water inside it. Is that normal? I assume it got in through the inflator hose. But, I would have thought water could not get in there without pressing one of the buttons on the inflator. ???