I have an 87 hard top Monte Carlo. Old weatherstripping was falling apart on driver's side and passengers was ripped by an attempted break in. I replaced both sides being careful to make sure it was properly in the channel. I did not use any adhesive as it seemed to hold in place on its own. There are no leaks from rain or hitting it with a hose while washing the car. Where I have an issue is above 30 MPH wind blows in at the rear corner of each window. How do I correct this? It looks fine while stopped but at speed it is letting air in. What is wrong? does the window need adjusting? Is the weather stripping on wrong? What did I do wrong?