I have the same problem. You need to use the nickel trick by threading the scs bolt backward into the scs. I sanded my wedge for a bit so that it slid on easier. I also used the technique of using a rubber mallet to hammer it on.
http://www.youtube.com/watch?v=EVtijZBD7rU
I know a lot of you have seen the scooterzone one but this one is done by some random kid. I found it quite entertaining. Regardless if it hates on us.