We are very sorry to see you experienced difficulty assembling your shelter. We recommend at least two people are required to assemble a shed of any size. Assembly time depends on a variety of factors, including roof design, tools available, DIY skill and the pace at which you work. To have any defective parts replaced send us an email to parts@shelterlogic.com and include your name, mailing address , phone number, model number, a copy of sales receipt, missing part numbers and quantity. We are available for assembly support 7 days a week at 1-800-932-9344. Hope you are enjoying the final product! Thank you