assume your car is a standard, (small hump) any chance they may have sent you a set molded for an automatic? If not, maybe it wil lay down in time. I wouldnt think you should have to glue it down. It would be a pain to remove if you had to take it out for any reason. If it just isnt happening I might be inclined to strategically place a small oval head interior screw with a finishing washer in the worst area(s)