Laser Pegs Mars Rocket

Mars Rocket: This is a large 580 piece kit. The main rocket mission module was difficult to put together due to building upwards 4 high without interconnecting support and some overly tight fits on some of the bricks, The rest of the rocket was okay The side rockets and satellites went together without any problems (though the rocket nozzles don't have a tight fit and tend to fall off). The size, and some connection issues don't make this a great model to play with. There are 2 astronaut minifigures (1 unassembled that was a pain to assemble). The kit advertises 13 LEDs, but it's really 6 bricks and a helmet backpack. 3 bricks are 4x4x2 cylinders with 2 LEDs (2 are in clear orange bricks with flickering lights; 1 clear). A 4x4x3 motion activated clear orange brick doesn't work all that well and has 4 LEDs. It takes somewhat vigorous motion to reliably activate which isn't advisable for a model of this size. The on switch is hard to put in a position to keep the lights on. The remaining lights are in 2x4 bricks; 1 clear; 1 clear orange projector. There are many clear bricks: 20 2x1 orange bricks 49 2x2 orange bricks 6 1x4 orange tiles and 5 others 11 4x4 clear ring bricks 22 1x4 clear tiles 26 1x2 clear bricks 15 other clear assorted bricks 19 2x2 clear blue cylinders 4 2x2 clear blue nozzles 6 2x6 2x6 clear green polygon tiles 12 2x2 clear smokey nozzles One brick was missing and the company replaced it efficiently

Pieces don't lock together well so the thing is always falling apart as you try to build it. Missing several pieces with several extras of unneeded pieces.