Instruct: Classify Amazon reviews into positive or negative sentiment
Query: missing piece

got this screw drive extension kit, it described as " 8', Garage Door Screw Drive Extension Kit, Compatible With All Chamberlain Screw Drive Garage Door Openers With A Quick Install Rail System, Includes An Extension Rail, Mounting Brackets & All Necessary Hardware." It seems missing the 8' screw post, the pic show with screw post but the kit didn't have one and call the company and they say the extenstion kit comes with rail, mounting hardway brackets and all necessary hardwar??? well how im going to work with out the extra 8 inches of screw post? so buyers beware