Thanks all.
I think I'll ask if I can exchange it for a compact.
I wasn't too worried to start with, but I was very aware that I had to make use of the granny gear on my tripple this morning, as I do just about every time I ride
If not, I'll see how it goes and look to swap it out later on.
I've been looking to push my riding to the next level, so this might be a way to push myself into it.