There have been numerous threads about slot machines and if casinos tighten or loosen them during the week, weekends or during peak times. All replies tell how the chip needs to be replaced and its a lengthy and time consuming process. Essentially not worth the hassle to constantly change the percentage. It seems the travel channel knows when I am near a Vegas trip as they start showing Vegas related shows. Most of the shows are close to 10 years old, but the one I saw was only a year or two old. They had a section about slot machines and showed two types. The first type was the older slot machines and how the chip with the hold percentage was embedded in the board. The second type was some of the newer machines. They showed how by simply opening the door, accessing a menu on an internal screen they can simply and quickly change the percentage. It took them all about 10 seconds. Before I though no way that casinos bother changing the percentages. Now it has me now wondering if casino do it. Just one of those things that got me thinking.