OK the mech came in the mail, and if I take just the coin acceptor piece out, the coins flow through it fine. However, when the coin acceptor is installed in the full assembly, the coins are rejected. It appears that the paper clip-like tabs from the back part of the assy are pushing through the mech, and preventing the coins from dropping through into the catchers at the bottom.
If I pull out the coin acceptor piece from the top, I can see 2 groupings of switches in the back panel of the unit. If I hit the top one with my finger, it will reject coins that I've manually placed in the bottom, and after doing it a few times, I'll hear where it's ready to vend a soda.
The assy is currently set for .30 from how I can tell the jumpers are arranged, but I haven't gotten it to vend for .30 yet.
Any thoughts or cleaning/adjustment tips would be greatly appreciated. And I'm enjoying the learning process so, please refrain from any "just drop it in a box and mail to johnnieG"s for now please.