Has anyone used this primer? I am painting a ninety year old house with the old style 3 inch wood siding. They want to keep the home as original as possible, so new siding is not an option. Their are many spots with loose & peeling paint that have to be scraped. Will the Peel Stop Primer cut down on the amount of scraping that has to be down and will it prevent the paint from peeling again in 4 or 5 years?