Sorry, been busy with other life stuff, forgot about my resources. Profile has been updated. Thanks for the reminder!
Also this is what I meant by using whole diffuser and just stuffing the air intake with some solder, or is it even necessary? Second question is, how do I cut slots without a machine mill? I saw someone drill 2 holes then meet the holes with angle grinder? Seems sloppy, but I guess I could file to near ideal.?