Yeah, vertx makes everything too big, I have to stretch my SCS every time I take my bars on/off, it sucks.
Vertex fork tubes are definitely a tiny bit bigger than every other i have ever had...its a real bitch to get my proto scs off..
I would recomend sanding dow the inside of your scs until it fits...id try to stay away from sanding down the fork tube though as it could weaken it and give it a place to crack/break.
For sanding down the i.d. of the scs a 1 "flap disc" sanding drum on a drill works nice.
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whos vertex?
This will workfile down the top cap a little bit