first, open the Base box. can't find K810, K710 parts. But why did the assembly show them?! So I try to open the other Box and found K810-1R K710-2R.....parts, but no hardware in this box. I found assembly manual instructions, the manual shows K810 and K710 need to be named T-F parts, but I cannot find them!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Very very very bad product!!!!!! I don't want to continue！I want to return!! Don't buy this!!!!!!!!!