I know this has been beat to death and I know you will all say use the search bar to find out. I have done that and I have come upon many many many builds. None of them tell me how to do it though. The ones o find are all just built already. I realize I just need a mailbox and some ducting and an AMNPS. But do I need to cut holes in the mailbox for airflow? Do I have to rip out the chip leader in my MES? Do I have to drill a hole in te top for more airflow? Is what's there good enough? Does it raise or lower the temp? Will cooking times change? I have no idea where to start other than getting a mailbox and and some dryer ducting.