Mike, and others thank you for your input. After Mike's post I feel better about the soldering. I think I will stick with the Magico tweeter, no offense to those who suggest otherwise. I got the S5s used for about $18,000 from Scott Walker in CA including the shipment to Alaska. New they were $28,000-$32,000, so I'm told. I expect any after market tweeter installed in one speaker may cause a conflict sonically with the other speaker etc. Thank you to all.
Guy.
Guy.