Soldering should help, but I would caution you to note the comment on this page:
http://www.teamnovak.com/How_to/How_To_Solder/solder.htm
SOLDER JOINT BASICS
Before solder is applied, a good mechanical connection should be made
between the wires by twisting the wires together. Soldering should be
considered a means for making a good electrical connection, not a
mechanical one.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
I would do something quickly though -- I doubt the "occasional flash"
is good for your diode pack.
Simon
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