I don't get it. Why should these units "require service?" They are glorified radios, right? I never have to have my radios tuned (or do I often "tune" them...? :?) What is up with that? And what does Escort tell you is wrong once they get a look at it? "Oh, your flexy-oscillator was throwing some asymmetic harmonics." "What the flip are you talking about, Kip? I don't understand a word you just said."