Mark;
The Corbin Smuggler like the seat should anchor at a few spots. The rear should go into or on the piece of channel under the tail much like the saddle must sit in place there. Also there should be two brackets on the front that have two tits (or screw heads) on the bottom to seat on the saddle rail running cross the bike (just like the saddle does), and on top of that same tit facing up should be two pins or crown nuts that front riders saddle fits over. The third area is the this should all lock down when you press on the riders seat, just like normal.
If you're having problems getting it all to seat properly, you may need different size pins or crown nuts, I had to do this, and loosen the bolts / nuts there so the saddle can find its home so to speak. Also the tits (screw heads and or spacer washers) or nuts could be too long or large and lift up the seat not allowing it to latch.
Sounds complex but it's not, ya just have to futz with it.
Good luck.
BTW - I'm disappointed in Corbin's attitude just because you're not the original owner, that is very poor customer service. Just sayin' :angry2: