Replying to Trampoline dub cork help!

I'm trying to learn a double cork 10 on the trampoline, but I keep landing 990 on my left side (I spin left). I know that I'm spinning cork 5 to switch cork something, because I can feel myself go over my right shoulder halfway through the trick, which is how it should be. But landing 990 on my left side means that I'm not following through to a 10, but to a 12. I think this means that I'm accidentally spinning cork 5 to switch cork 7...which I don't want, but I am having trouble fixing. Any help?