Proskuneho pretty much says it all. My school hired mostly ATP grads (CFII-MEI) and most of them already had 1000 plus when they moved here. I was one of the last ones hired as a new instructor two years ago. The only instructors they've hired lately were the guys who went thru the schools own CFI program here locally.
It has gotten really bad lately, instructor hiring got really tough about a year or so ago only cuz theres a pile of resumes for one or two opening every couple of three months. The only openings have been instructor firings lately.
That being said,,,,DONT STOP APPLYING, ESPECIALLY IN PERSON!!!
Put a face and a handshake with the resume you give them in person!...You'd be surprised what happens when you network in person!...Also, dont be afraid to take any job they may offer even part time instructing.

Good Luck