Upon opening packaging, there were several screws loose in the box. These are not a part of the bolts for leg attachment included as part of the assembly instructions.These screws appear to have fallen from the under side of the bench and were not properly installed prior to shipping. Attempting to insert the screws where they go does not allow for tightening. Inspecting the screws, it does not appear that the screws are stripped. Rather, the hole for inserting the screws were stripped, leaving the bench unsecured and making it impossible to use the screws to tighten the bench.This is the case for 5 different areas on the underside of the bench.When attempting to contact the seller, the only option is to submit a web form describing the issue. However, it is impossible to submit the webform because it requires you upload a proof of purchase, which their website will not accept. Have tried from mobile as well as desktop and attempted uploads in pdf, doc and jpg formats, all less than 400kB in size.Only option may be to try and return as this is unacceptable for a $400 piece of furniture.