[Joe]

Looks good but you got some serious issues already.

The microcracking you see around the screws in the lexan will grow very soon into full cracks. Polycarbonate has that characteristic... it doesnt like constant stress like that, it will fracture.

You shouldnt tighten it down but not so much that you start to over stress the plastic. Let the glue do the sealing, just have the bolts there to provive a steady force.

if I were you I would remove that lexan and start over on that top plate or you may end up with some issues later on.