Tivy, you might want to bend the metal tab that the seat slides onto up a bit. This should allow it to set back a little more.
If there is a problem with the seat I hope to he$$ you purchased it through corbin directly, because they will not work with you at all if you didn't. Everything will have to go back through where you purchased it.
That didn't work and yes I bought it directly from corbin. They are suppose to call me back when they open in California. Each piece works independantly but together, the front won't close-it hits into the front of the rear seat.
I had a bit of the same problem the first time I mounted my Hollywood seat. The issue was the rear pillion, as you have noticed it needs to slide all the way back to allow the front seat to mount (and close) as it should.
The metal tab that ozzy mentioned is meant to slide into a bracket on the pillion. If you loosen the 2 bolts that attach this bracket to the pillion, you will "open up" the gap that the tab slides into. I found that this was what I had to do for it to fit. I simply removed the 2 bolts and installed a couple of washers in between in order to widen the gap a bit. I then slid the pillion back on, giving it a bit of a slap to get it all the way back there. Never had a problem since then!