Thanks a lot, somehow I missed your 1st post.

As for GSM, yes, I've done tests - in city areas there is 0 difference, in rural area with only one strong Node B signal is a little weaker if we face it *directly* with the alu backcover, and a similar *increase* in signal strength when we face it rotated 180 degrees (i.e. with alu backcover positioned like "reflector" behind N900 internals). None seemed to change anything in practice.

I have booked (and payed) more professional signal ratio tests for body replacement phase, when it will be ready for such tests.
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As for scanning N900's body, it would surely help a lot. As I've said earlier in this thread in answers to PEB's similar query (sadly, he never managed to finish that 3D scanning job), plain STL file format would do best - it should be least problematic for you to obtain and for me to work on (STL is supported by most FOSS CAD programs, and, more importantly, it is only one format for 3D with really good support in FOSS CAM g-code converters).

There is absolutely no problem with every part being scanned as separate file - of course, if you have skills and time it would be even better to have everything combined + separate files as addition, but, as I don't have access for 3D scanner, I'll accept basically whatever you may throw at me

Thanks again,
/Estel