Having rebuilding many loudspeakers the Xovers is the weakest point
in 90% of speakers capacitors in old speakers dry out ,your speaker needs a total rebuild ,resistors ,mills resistors or top quality path audio
Millflex make excellent copper foil paper oil at decent prices , are lower cost Auricaps XO ,and inductors Jantzen make very good quality ones and for sure rewire , Neotech Teflon -6-9s Copper
awg18 for the teeeter, and awg 15-14 for kids, Bass, and put copper loudspeaker terminals , VH audio WBT next gen they are only $40 each , if you are going to rebuild do it right a big step up in quality. The Xover for sure is dried out.