Nice write-up, T. A couple of questions:
The mounting frame for the E92 speakers is the same as the E90, but I don't see in your pic where the OEM speaker would bolt to the door panel. Did you also remove those bosses? Otherwise, wouldn't you just use the mounting ring you speak of to use them to mount the speaker to the door mechanically?
I've snapped many Morel tweeters in the BMW pods - there is a tab inside the mount which must be trimmed with an xacto knife. Did you try this?
Where did you set all the xover jumpers before installing them where you did?
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