Dude I don't see why it can't happen to you again, except you keep mentioning that this is what "used to happen to you".
I'm figuring it out as I go along, but the one constant seems to be, when I doubt it and look for it, they don't appear to happen (which I now know, they really ARE happening, just in the way I expect, which is not to seem them... so I see what I expect, nothing).
But when I relax and think of the times they did happen, and realize that I don't need to push for it, is when they start happening again.
Like last week, with my San Francisco thing. I was listening to the radio, all excited thinking "man I wonder if I'll hear SF today!" Then I thought, "yeah, but don't force it. It will just be fun if they say it, but if they don't, it'll probably be somewhere else", that INSTANT they said "san francisco". This has been happening all last week, I'll think SF, then relax a little, and they say it.
I think when you're concerned it's not "working", that's what you get. When you just know it's going to happen eventually, and not to rush it, it happens twice as fast.
At least this has been my experience so far. Also, having so many of them, all at once, can freak you out so you may resist it for awhile. I think a lot of it has to do with fear.