Models 4/6/8 (9813B) "Automatic Power Control" network schematic.

Anybody have a copy of the schematic for the crossover network (assembly #35490 I believe) as used on the Models 4/6/8 and the 9813B ?

I have a pair of Model 6's and wish to replace the old Callins caps..

Also want to identify one of the components on the PCBoard.

I can upload photos of the board if anybody would like to see them.

Thank you.