Rick,
I think I can solve your dilemma on the ring voids that occur sporatically
on layers 5 and 6, but there are several questions that I need answers to
before I can give you advice on what is probably the root of the problem.
It might be better to discuss this by E-mail  (off the TechNet), so that we
don't tie up the net.  Either that, or by fax, or telephone.


Ray Lockshier
Independent Contractor for Solder Training, Problem solving, Product Flow
ect..
1584 78th. Terr. N.
St Petersburg, FL 33702
Phone (813)576-0488     Fax (813)577-3295

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