I have used Zinsser BIN shellac primer for many years with great results. Yesterday when I went to Menard's to get another can all they had on the shelf was the "new and improved" B-I-N Advanced Synthetic Shellac Primer. Not wanting to try something I knew nothing about on an rush project, I went to another store and found a can of the original. Zinsser still lists both products on their web site but the Menard's clerk thought the original was being phased out.
Has anyone used the synthetic primer? How does it compare to the old "natural" product?