Digger is 100% correct on how simple it is to use XChange2 for the creation of (or mimicking E-Trac patterns if you desire) disc patterns. With the CTX, after you create your disc patter 1 & 2. you also need to complete the process of the mode creation, by selecting all the other options that make up the MODE, bin width, tones, all the other things Digger mentioned above. I personally don't use anyone else's MODE as they have built it. I might start with someones existing disc pattern but modify it for my personal preferences, or just create my own. The same goes for the other MODE settings. For me, getting my bin widths, and tones selected for my liking, were the most important settings. Each person's hearing is different., soil is different, some trash my be typical in some area's and not others. So a super productive MODE created for one area may not work very well for someone located elsewhere. Whatever/whoever's MODE I initially started with was tweaked one way or another over several months. As soon as all this snow melts, and I can detect again, I'm sure more tweaking will be in order. Last summer it was extremely dry here in NW Missouri, it is looking like we are getting our moisture back in the form of LOTS of snow. All the moisture may cause some refinements in my Modes. I won't know until I'm out there........It is rather satisfying feeling to know, when you make a really nice find, that the MODE you are using was one that you built yourself...........Good Luck with whatever modes you all use.......HH