The other main reason that comes to mind for excessive soaking (assuming no mites or shed issues), is temperature. You may want to check that your hot spot is not too hot, or the ambient temperatures are not too high. Balls will often soak to cool down. Even alot of my females that are developing follicles this time of year will soak in the water bowls, or "bowl wrap" as some say. Both of these actions are done in an attempt to lower body temps.
I hope that helps,