Gene construction advice needed

[Joseph C. Bagshaw]

I'm looking for advice on a gene construction project.  I'm trying to
assemble a 219 bp gene from oligonucleotides.  I designed the oligos so
that each overlaps the next by ten complementary bases.  The plan then is
to fill the gaps, then ligate.  I can get perfect results with any two
adjacent oligos, but when I try to assemble the whole, instead of a 219 bp
band I get a smear.  Any advice or direction to any source of information
would be greatly appreciated.  I have not found any reference or "how
to" source, like "Idiot's Guide to Gene Construction".  Please mail to the
address below or post here.

********************  HAVE GENES, WILL TRAVEL  ********************
Joe Bagshaw, Worcester Polytechnic Institute
jbagshaw at wpi.edu
Roadkill on the information superhighway.