Uneven nostrils. What happened? Would shortening the longer medial crus help?

I am just curious as to what may have happened in this scenario. My nostrils are very uneven. My doctor said it was "[RS bleep] Luck" and that it was not something he did during surgery although it has been uneven since the cast came off. Is it differences in the height of the medial crura? Would shortening the longer medial crus help or would adding filler to the shorter side help even out the nostrils? I have not had steroid shots but I am not sure this is due to scar tissue. Would they help?