I simply unscrewed the crossover bases and handed them over.
I don’t know what Klipsch used in your model iteration but in 1978 the factory used lamp cord to wire the crossover components…..as well as to interconnect the horns and the woofer (!).
So, I measured all those lamp cord segments and had the tech fabricate audiophile quality replacements for them all. The push-type connectors for the horns were a breeze to replace but the woofer wire replacement required opening up the woofer chamber, carefully melting/removing the old and soldering the new wires.
Due to the long break-in period any immediate results were tentative, but I thought the new parts noticeably opened up the sound and now, after a few years, they sound great to me.