Plate Refinishing?

[robert sadowski]

Dear list,
     Could some of you rebuilders throw out some of your techniques for
sealing the
old plate finish before applying bronzing lacquer?  I hate the thought of
stripping the old finish off.  In the past I've tried shellac, auto sealers
and primers and always seem to get a little lifting in those sharp bends
around the struts.  

Thanks,
Bob Sadowski RPT
Erie, PA.