too small ... missing parts

this toilet seat is an impertinence! I guess, the toilet bowls are standardized in size, but then I do not understand why preparing to small glasses! Each time I want to wipe my POPO, slips his glasses off to the side and I think times, it is This does not last! Next, I have to complain about the mounting, we go on missing nuts, washers and this plastic cone in the bowl glasses leads the side ever in the prefabricated holes! These things I had all the "steal" me of the old toilet seat ... that just can not be !!!!! Because I paid a full toilet seat !! My next toilet seat I buy anyway no longer on the Internet, but in any hardware store where I can advance to peek in the box if everything is complete and in the correct size !!!!!!!!!!!!!! !!!!!!!!!!!