GREAT JUSTIN, I AM GOING TO GUESS,THOSE 5 BALL LOOK IS THE 5 HIGHEST PVC PIPES AND ARE LESS DIRECT ANGLE BACK TO DUCER AND SO DID NOT SHOW UP EXCEPT THE TOP MAKING THEM LOOK LIKE BALLS,WHEREAS THE OTHERS RETURN A BETTER SINGAL AND IS PICK UP BETTER? SURE ARE IN A GOOD SPOT,TOO MANY PEOPLE STILL THINK PVC WILL NOT SHOW UP,WE ARE PROVING THEM WRONG,THANKS