Got my new ride in May. I have always kept my rides clean but just recently became seduced by the detailing world. Right now I am using Zaino stuff (Z2, Z5, Z6, Z7, Z16) but plan to try others. I have applied several coats of Zaino. The look is awesome and when the ride does get dirty it is so much easier to clean. When should the polish be stripped off and the process started over again? Thanks.