Well a little update. I took the board back to the shop, they said it was probably not an issue because the fin box area had reinforcements and wouldn't take on water. Never the less, I got them to unbox me a brand new one, and exchanged it.
Maybe I'm a bit pedantic, but I expect better quality then that when I buy a brand new board. Service from the shop was excellent thou, can't fault them.
I've had the board out twice now, and it goes nice, not as direct of a feeling as my old starboard freestyle board, not as much feedback, a lot more forgiving feel actually, but its definately more turny, and is great in the air. Definately performs thou, planes about as fast as my old board, but holds speed through turns much better, softer through chop, and really pops off the ramps. Not quite as exciting to ride on flat water I think just because it doesn't feel as direct, or give as much feedback as my old board (which probably was a bit too lively). Also rode it in waves on sunday and had a good time, haven't riden any other freestyle wave boards in this size, in waves so can't compare. Overall happy with purchase, still hate the colours, and it wasn't actually the board I wanted, which was a 92L RWW Pro, but none in stock and the FSW was crazy cheap.
One thing I did notice was that the fin spun out easy sailing in flat water, which was weird considering its a massive 27cm fin, compared to my old board which had a smaller 24cm pure freestyle fin, which I never had a problem with. Didn't have any problems in the waves thou, will have to keep an eye on it, probably just took me a day or so to get used to the different way the board rides.