N-800-e help

Hello all
New to this stuff so please be gental.
I have just finished a set of 828 cabinets and am now ready to start on the drivers.
What I have is a set of 803A LF drivers and a set of 802D HF with 811B horns.
The dividing networks are N-800-E.
This is where I am haveing the problem I have been doing alot of research and have come to the conclusion that these networks have probably gone bad and need to be repaired.
I have tried to find a schimatic on the web to show all the componants in these things
so i could replace the parts, as they are full of tar and i cant see anthing in them.
I am a complete novice with this electronic design stuff but i can follow directions if somebody
would be so good as to point me in the right direction.
I thank you all in advance for any help you can provide the last thing i want to do is ruin this set of drivers.

Robert