I've made a point to have a few A&Ps and EAA Tech Advisor visit my shop during the build. It's always good to have another set of eyes on your work to make sure everything is ok. My Tech Advisor has mentioned to me on more than one occasion that he feels the alternate air door on the snorkel will allow dust and debris to enter. I installed the door exactly per the plans, and visually it looks tight, but when tapping on it with your finger you can hear a "snap" which indicates there is still a tiny gap between the door and its seat. Have any of you encountered something similar? That a tech counselor or some other experienced builder has expressed concern over Van's alternate air door not being tight enough?