Glue Pot Binks 2 gallon pot for close to 30 years as well. Secret is to change pot liner every fill. I very seldom have to clean the lines or pot unless I tip it over in transport and glue gets up into the gauges (only happened twice). I remove the tip head and clean when needed no different than a gun. The liners keep the inside of pot spotless. I like it because I can turn the gun any direction and it sprays the same. Great for up behind dashes, overhead on roofs ect. I can also lay the head unit down anywhere and not have to worry about it tipping over or unhooking the airline to hang it.