You should stick to camera size of 1. I'm not sure why you are using 1.35something. NGUI was written with ortho size 1 in mind. If you want to change the size of your UI, adjust the UIRoot. Don't touch the camera.
You should also make sure you have the latest NGUI. There have been changes related to game/scene view recently. It wasn't possible to determine the size properly when the game view was hidden.