Hey guys, Well, received my ACI Sapphire III kit on Monday. I'm really pleased with the package so far. Everything was very well packed, nothing missing, and just felt "professional", if you know what I mean. I ordered the non-assembled version of the cross-over, but received it assembled. Oh well, it's probably for the best anyway... less for me to screw up for my first attempt at a full-range, I guess, eh? So anyhow, man what a weird driver this Focal 7K4211DB in terms of the outline that I have to create to flush mount it. I'm trying to figure out the best tool to use to make the flush mounted flange. I'm thinking one of the following: 1) top-bearing trim bit with a self-made MDF template. Seems to me coming up with the MDF template is only marginally less difficult than doing the actual flange. Am I missing something? 2) some of those brass template guides with a self-made lexan or other thinner material template. This might be a bit easier than the previous, since it's a thinner material to work with. But I've never worked with template guides (and can't quite figure out how they would work) nor do I own any. I see these template guides, but do I need a whole set or just a few? Bear in mind I have the Bosch 1613EVS plunge router. 3) trace and hand route close, then chisel and pray. Have no clue how this would go. Any insight, guys? Thanks in advance.