Heellllp!!!
Firstly welcome to the site.
To help you we need a few more photos.
It would be good if we could see the actual plan/drawing and then we could work out if the deck is lower at that point.
Then it might be a case if measuring the cutouts and a bit of tweaking to get the correct fit.
EDIT.
After a quick look around i found a few pictures and it looks like you will need to do a bit of tinkering to get the correct fit.
Martin555.