This topic came up because of another question and answer type site I like. SodaHead but that isn't important. I got out of detecting for a while and just bought another MXT. I started to read Jeff's book again. It has such a wealth of information. It made me think I bet even very seasoned MXT users have run in to things in the book that have given them a new understanding of the MXT or made a light go on about some laziness that has crept in to their technique. For me it is not taking the time to reground balance my machine often enough. What is it for you? I bet this will be a learning experience for more than one of us. Hope everyone enjoys it.