Here's a simple question to start ... I noticed many of the NPO capacitors are marked "470", as opposed to simply "47". These are the same thing, correct? Just want to make sure! Also, C200, C212, C218 (NPO 150) are supposed to be marked "#21 ASD" on the back. Can they have different markings on the back (I believe that mine do). Thanks to all in advance! Peace, Stephen W3SMK