Does the K tec Spoiler need any trimming b4 fitting?

As title asks does the K tec Sprint Spoiler need any mods before fitting? Only reason i ask is ive dropped it off to my painter and we offered it up but i forgot to open the boot to make sure it doesnt catch on the roof.

Or will he be ok to paint it then fit it painted
 
Mine fitted spot on, although it needed pulling down on the ends after it had been in the oven when it was bonded on. I need to go around the edge with some more sealant to stop water getting trapped underneath, as I didnt put enough on for it to squirt out when fitting it. Trying to clean up the excess whilst holding it in place would be a job for an octopus!!