Detent Ball Bearing Help [1990 Integra RS / S1 Transmission]

I tore down my transmission to combine two bad transmissions (one with a blown apart casing, one with bad synchros) to put it together into one working transmission. I am almost done, the only thing I cannot figure out is -- I have that I have found so far, two ball bearings (between both of them) and one spring. I am assuming these are the ball bearing detents mentioned, but I cannot figure out where they would go. I can find where the ball bearings/springs should go approximately in the Y80 posts and diagrams, but nothing for the S1. Can anyone help me, please? Thanks!

Image of one of the ball bearings (the other is the same size) and the spring I found:
http://i.imgur.com/VJ3TfFS.jpg

I figured out what the ball bearing was from. It held the reverse fork 'in place', that is to say it belonged sandwiched between the two pieces of metal. I'm replying just in case someone has the same issue in the future.