Something tells me you might come up with another question? When I cut the throat on my sons 80 gallons RF, I accidently gave it a 1 " filler on the top of the half moon cutout. The concerns then for that small amount were the same regarding smooth airflow. Despite the fears of that happening, I forged ahead against better judgement and eventually had to cut out the extra inch when my volume increased in the CC due to the square doors. Of course it was now welded to the cc and was a huge pita
The gentlemen stating their advice are extremely knowledgeable with substantial experience if your confident...follow thru. If not, rely on someone who can steer through the shallow reef... Now what the hell does that mean?
Make no mistake, there ain't no powder in this Puff ! And... I'm not really a crazy person but I play one in real life