Have same prob. but with another brand and 9 degree cleat that came with pedal. Mine so bad I often had to put rear wheel against something to keep rear end of bike from moving. Accidently found I could clip out VERY easy by rotating ankle in to frame vs out. Have done just about everything: lubrication, moved cleat to other shoe, tension adjust to both extreams and inbetween, cleat position - just one more thing to try. In order to eleminate any possibility that shoe is problem I am going to screw cleat to board and test.
Last edited by ctpres; 08-18-12 at 05:28 AM.
Reason: add info