Sonia, I think most here would welcome your input, given your background, especially as you've declared your 'conflict of interest'. Welcome to Audiogon!
On the topic, my method for good physical and electrical connection would be to tightly twist the ends together, solder and then heat-shrink the join.
On the topic, my method for good physical and electrical connection would be to tightly twist the ends together, solder and then heat-shrink the join.