Just got a brand new corny (never used). The directions say to simply run sanitizer through it before use, but I will probably soak in OxyClean or PBW for a few hours first and then sanitize. My question is whether disassembly of the dip tube & posts are necessary to clean a brand new keg. Interestingly the directions say disassembly is NEVER required to clean the keg & it would void the warranty. Seems like everyone disassembles these when cleaning so I am curious if there are people out there who never do so when cleaning and what kind of results do they get as far as keg life and beer taste?