When you ask a change for someone and asks the same thing to another person, the person who posted first think he has the right to say that the other one is copying. It can happen that this designer to open a logo court against the one is copying and if 15 people say that he is copying, he is banned from the contest and his entries are deleted. Thus, the best way to ask for change of elements you want in your drawing is by Contest Discussion at the bottom of the principal contest page (you wrote there already (February 17th, 2014, 7:33pm).
For example, you can ask for ellipses, LPC within the ellipse, up chevron, chevron down, colors, etc..