I prefer 505 as well. I used a new to me brand on my current project, and it did not work very well. I contacted customer service, and I was told it was because I am using wool batting! Never had a problem with 505 and wool. She also told me that I need to “ keep my project in a large ziplock bag after spraying if I am working on it for a few days”....I have never done that-is this a usual way of working with spray basting?