Last night, I bought the Smart Keyboard Cover for my new 12.9" iPad Pro and I am starting to get used to the unique feel of the keys. However, I have noticed that the space bar is not reliable sometimes and will miss the keystroke about 15-20% of the time. It feels a little firmer than the other keys...is that something that just needs a little bit of time to break-in? Does it loosen up over time? Has anyone else noticed this when their keyboard was brand new or should I request an exchange? Thanks!