Something i was thinking after reading your post. If you are replacing the caps and altering the speakers sonic signature then its no longer operating as the designer intended. In a perfect world we would be able A/B the speakers and even make some nearfield measurements to see what is actually affected. Wehn i built my 3 ways , i used Axiom drivers and just used a crossover design program, ordered the parts and bobs your uncle not really scientific like doin measurements etc. Sometimes different isnt necessarily better,its just different. Alas , as i said if it sounds better for the listener and it makes the listener happy.
Thanks for the invite but i live up near Alaska and goin to california isnt in the budget though i hope to one day get down to see a few of the sites down there before it falls into the ocean . LOL
