John.. I'm still surprised! We have been designing 12-14 layer (standard) smt designs for about a zillion years, maybe not quite a zillion, but a looonnng time and no vendor has ever requested that the inner layer pads be larger. In fact, unless I am looking at the formula/chart in the Mil and IPC specs incorrectly, the minimum annular ring requirement for internal is .001/.002 mils vs .002/.004 mils for external layers. Therefore, by definition, your external pads should be larger. What am I missing??? Regards, Bob