Lexi, every so often someone such as yourself comes on this forum and with almost your exact situation asks the kind of questions you are asking about the Kappa 9's. Folks here could fill chapters on what you need to know on the K9's
depending on your specific problems but you need to first do a full analysis of each speaker and driver to determine what may not be functioning properly so that folks here can give you guidance on what your next steps should be.
I will tell you that IMO even if you could find someone to do all the repairs for you, it is not financially feasible to do that.
Here is a pic of the xover of one of my Kappa 9's when I was working on my pair. Some capacitors are missing because I was in the process of replacing them. I rewired the crossovers so I could open them whenever I needed like a clam shell. (The small black box in the upper left above the number 10 is the Polyswitch breaker switch for the Semit.)
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