3 Way Crossover Upgrade Question

[sgerus]

Hello,
I’m a DYI amp builder interested in upgrading the crossovers in my Klipsch KLF20’s 3 Way speakers
The amp I use is a 2A3 tube amp…. About 3 watts per side
The factory crossover topology is, 2nd order for the woofer, 1st order for the midrange and 3rd order for the tweeter with the xover points at 750Hz and 7000KHz
Based on what I have learned so far, it looks like the typical “upgrades” are
1. Replacing the capacitors with higher grade units
2. Replacing the inductors with heavy gage air core inductors
3. Replacing the autoformer with the Cites universal unit
4. Replacing the 40 ohm resistor across the tweeter with a .15mH inductor
My questions are:
1. Are there any other ideas of upgrades other what I have listed
2. Has anyone used a zobel network on the woofer’s
3. How does the autoformer work? Does it act as 2 inductors, one inductor in series with the midrange and one inductor across the midrange?
4. Any special considerations for using a tube based SE amp
Thank You