There is a gasket under the multiport handle that can be replaced, and if it's missing or installed incorrectly it will direct water where it's not supposed to go. The last gasket I bought ( a couple of weeks ago) cost $15.50 at my local mom 'n pop pool store, and it takes about 5 minutes to install.. There have also been incidents where the whole handle assembly has been replaced upside-down or turned slightly, that can result in crazy results. Those are the first two things I' would look at.....