That is some restoration job on your Apogees. Braver than I am.
I have Calipers that I have pseudo rebuilt (cabinet refinish and crossover parts replacement). I could get new tweeter ribbons from Graz and put them in, but my real problem is the degraded foam on the woofer panels. Graz won't sell new woofers directly, only to authorized repair shops and that job then gets costly and involves shipping which I would like to avoid. I am afraid of taking the woofers apart myself and refoaming them because I will surely screw it up and rip something that can't be repaired.