Have you read first about doing ground mods on system 80b before you did any of that work?

System 80b are way different that Bally/Williams...I would not start doing mods on this beast if it was my first System 80(This is just me saying).
I have owned 3 black holes in the past...If your going to dig into it expect a long journey.

We all do,For right now if i were you i would focus on getting the game to work and to play first..

Trust me its 80b...

Now that I have your attention,HELP THE MAN.....

Whatever Jack!! 12yrs and only 332??? This should be a great example.

Let's do this the easy way.Heck with that crap,Look down on other post..

Here's some vids from my friend Clay one of the best men in pin hobby ever,To those who want to run around crying for mama I did not watch the vids but they do cover a lot of great info about this beast.Just to give the OP a good feel about his problem and while I'm at it JOIN UP TO THE PINBALLNINJA SITE @ cfh@provide .Its covers more than 800 awesome repair fixes through every pin and worth every cent Hands Down..Thank you!! Much more vids and info on his site these are just a few!!