Pieces are glued together, the problem I have is with the angles
The first pic shows square placed on the bottom, the second placed on deck


Measuring along the back of block It's 72mm, along the front is 69mm.
I'm assuming these should measure the same, and It's going to be a case of soaking
the block, and taking apart then re-starting.
Was also wondering if it would make more sense to assemble on the actual ship, as this
would keep it completely square.
Any advice would be greatly appreciated, thanks, Steve

Thanks Andy, and yes, it was constructed with PVA glue. Had reconciled myself to dismantling the block, just needed
to make sure assembling on hull was viable. Thanks again for your assistance, regards Steve

It's not mdf so it won't harm it soaking it.