Used Aeropack Tailcone motor retainer and SCR airfoiled rail guides--compliment t' sleek lines nicely while nay hurtin' Aero one bit.  Perfectflite Stratologger altimeter with a Featherweight Altimeters screw switch and small Blastcaps on each av-bay end. Well, blow me down!  Added 16oz weight t' t' nose, and shouldn't have--it didn't need it.