Failed MEPS for high heart rate. Any chance i will get a waiver?

Those numbers are getting better, you might just be nervous while you are there. Next time, just relax, and avoid caffeine, nicotine, and any foods that might raise your heart rate, like chocolate. And when they take your heart rate, you can try doing the vagal maneuver, it's where you bear down like you are using the bathroom... this will lower your heart rate.