Are you sure that it's not going all the way out? If you look at the outside you should see a little tilt to it, but check the inside around the trim around the slide. If it is the same distance from the wall to the trim then the slide has deployed correctly. If not, then there maybe a problem.
2011 Georgetown 378TS in FireMist
2013 Jeep Wrangler Toad
Kirby the Old Dog, passed but still in our hearts
Max E. Dog, the new pup
Eureka the Old Cat, still hangin' on