Not hard to put together, was excited to cook. Massive steam coming out, did not come to pressure. Looked with flashlight.. the air vent lock never moved into place because it is not aligned. Tried to tap it hoping it would... no. So I burned 20 dollars worth of chicken breasts. Now I have paid $50 bucks for the pressure cooker, $20 for chicken breasts (and onion/garlic) and have nothing but junk. Already threw out box as could not imagine would need to return. Basically, I bought an expensive pot.