Bob,
If you get a chance take a look at the crossover pics I posted of my new AMT3's Wow, quite a difference. 4 coils (vs 3), 3 caps-2 pairs stacked-one seperate (vs 4) and a total of 12 resistors (vs 4)!!
I thought breifly about substituing the later type, but the woofers look slightly different, as well as the mids of course, so they probably have different specs, hence the difference in the crossover.
As you can see, it would be a royal pain to service, I'm going to leave well enough alone-if they fail I'll deal with it then. And not having a schematic for this style-I think I would end up with a bunch of parts, and no working speakers!!
All I'm going to do is reseal and t-nut the woffers (Midwest Speaker did a so so job), and lengthen the woofer wires, and add a pair of disconnects so they will be easier to remove in the future.
I bet yours has the same type-something to think about.
Bob