Have then in pvc "cones" and have been moving them around to test. Right now they are "stuck" in the hole left by the previous tweets in the a pillar plastic trim piece about 3-4 inches up from the dash, about mid point in the width of the trim aimed as much on axis as possible. Before that, I had them taped in the corners of the windshield firing diagonally (drivers tweet approx towards passenger and vice versa) aimed a little up (well actually moved it around).

I know what a baffle is, but I'm not sure I understand what you mean with respect to these tweets. I'm not sure how I would go about securing them to a baffle.

I was trying to include a pic or a link to this specific xt 25 model, the sc40 (it does not have a flange), but I don't see a way to do it in my reply.

Thank you.