I tried searching the internet and here...actually I feel stupid for asking but what is a reasonable gap between drywall sheets? I am doing mine as we speak and I have one or 2 places where I am looking at about a 5/8 gap..maybe less that runs approx 20 inches or less. I am hiring a guy to do all my mud and tape work and supposedly he is very good but I am not going to be in touch with him until I get the drywall done. Most likely will be doing a veneer plaster for the theater walls and ceiling... Thanks for any insight..