Very, very nice outfit, looks brand new.
The blocks are factory fitted and typical of Quicksilver and Zodiac design.
I know you pictured it deflated but when it was inflated are you sure you have the floor sitting correctly fore/aft and most importantly have you ensured the proper and full pressure is in the floor and measured with a gauge - it will need 11+ psi. Lastly the keel will need to be properly inflated. Make sure when you have done this you walk along the inner sides of the floor next to the tube to seat everything down properly.
However, until it is all properly pressurized it will not all sit right.