Nope, I don't have a legit reason, and you don't sound rude. I just want to increase my chances at some schools my GPA is really hurting me. I just don't want to ruin my apps for certain schools that are reasonable for me to get in (~30-40% chance) if I apply part-time and they reject me cuz I have no legit reason. Guess I could just put in something in my PS about financial reasons but it would really throw off the flow of my paper. I would rather do an addendum, do you think that would be sufficient?