Is this crossover wired correctly?

Hello. I am preparing to sell my dad's Klipschorn's, and want to make sure the crossovers have been wired correctly. I went to check it today, but honestly I don't really recognize some of the things in the schematic. Hoping someone can confirm for me that everything looks good? Pictures attached. They have been reworked by someone else using parts from Bob Crites website
 

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