I have a problem with the caulking around my tub. I have a Kohler tub and a Tub Wakk kit. It's about 10 years old and still in good shape, BUT ! within 4-5 weeks or sometimes less whatever type of tub caulk I've used ( regular caulk, & pre-bent stick on )it just will not stay on. I've scraped and cleaned the tub to a mirror finish and still no luck. Has anyone ever had this happen or does anyone know of a product that will wwork better. Any and all suggestions are very welocmed !!