Jason,
        here is just one possible avenue to add to your enquiries,
reflow/wave temp profile! Is the temp profile heating or cooling too quickly
(particularly cooling). One other thing that you don't mention, how is the
copper balance across the design and all layers?
        I don't necessarily have your answer but thought these two issues
were not mentioned.

Sincerely,
Brad Velander.

Lead PCB Designer
Norsat International Inc.
Microwave Products
Tel   (604) 292-9089 (direct line)
Fax  (604) 292-9010
email: [EMAIL PROTECTED]
http://www.norsat.com

See us at Booth S8155 at NAB 2002 in Las Vegas April 8 - 11.



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