Not to hijack here, but along the same lines I am mulling the conundrum Johnk presents. My recently acquired Flamencos are in rough physical shape and I am thinking of refinishing the cabinets and making some mods (mostly aesthetic) along the way. It's something I am having to work up the courage to do since I want to respect their originality but I simply don't like the way they look.
Of course I am having similar thoughts about updating the crossovers. My answer so far is to save the original crossovers and build entire new ones so that I can always go back to stock.
Back to topic--Ivana, thanks for sharing about the caps. I am going to put them on my list.