I'll echo what Crazyterran said, and echo what he said here:
http://www.dakkadakka.com/dakkaforum/posts/list/651198.page#8268111
by suggesting you talk to some of the regulars if you're ever down in
GW Highgate in Burnaby or Imperial Hobbies in Richmond - they might know some smaller, more informal groups.
Further, there's also the group that runs the Trumpeter's Salute. In addition to the Salute, they have a regular gaming night where they rent out a hall at Bonsor Rec Center near Metrotown. It'll cost some money to join, in order to go more than once, though.