I am trying to find the correct size screws, I want to mount it to a 1" MDF. I know the norm is to have it on 3/4" MDF but I didn't realize that. I have a 10" Alpine 10D4 (the newest model). I have tried 6 different sizes. I am guessing that the I will need from 1.5"-2" in length. I would like to have socket screws if possible. I tried 1/4-20 x 1.25" it would turn a couple of times then it would get tight and would not turn anymore. another problem i am having is that most screws have a smooth part towards the head of the screw, depending on the length; the more smooth area it will have. Please if anyone has mounted a new model Alpine sub or has any suggestion please please please let me know any suggestions or help will be very appreciated. THANK YOu VERY MUCH!!!