In the new place have a corner shower enclosure, works well and looks great, but I noted some flex in one of the panels and the caulk has come away from the seem. Yes, I know rip it all out and re-do it... But, the flex is high enough it won't see much water (just the occasional splash) and my project list is already too long... Is there an adhesive I could use to bond the seam then caulk over it?