Hey guys I'm strongly considering upgrading to a MTC for my 400 gallon system. Was originally thinking about a MVX but the dual mazzei has caught my eye. There isn't a lot of userbexperience with them but it seems a few of you have been running thenbfor 1+ years. Most of your initial feedback seems very positive. Does that still hold true today? Do you find yourself having to adjust often to keep it dialed in? How often do you need to clean the mazzeis? Thanks!