The solid surface countertop in my bathroom has a backsplash attached to the countertop by some type of adhesive or grout. Over the past few years, the adhesive has discolored and now looks orange and dirty. What I'd like to know is how can I remove the backsplash and clean the adhesive off, then reinstall it with new fresh adhesive. What product would avoid this problem in the future? Thanks for your tips.