Keep coming out of my Speedplay X3's
I've been riding on Speedplay X3's all season and have been generally quite happy with them. However, lately I've been coming unclipped on my right pedal when I'm pulling up. It doesn't happen all the time but even occasionally is too often--one of these times I'm going to get hurt. I don't think I'm rotating my heel too far out and, in effect, unclipping myself.
I replaced the springs in an effort to stop this problem but it is still happening. I've also tightened the screws on my cleats sufficiently-any tighter and I wouldn't be able to clip in.
I've put in about 3,000 miles on the pedals--could the right pedal be worn and need to be replaced? How would I tell?
Or perhaps I should replace the whole cleat, not just the springs.
If I do need to replace the pedals, would it wise to upgrade to zero's or perhaps an X2? As I said, I like the Speedplays and only need to address this one problem although I would like to find a source for replacing the 4 x 11 mm flat head machine screws. Even though I always put cleat covers on when I'm walking on any rough surface, the screw heads get beat up pretty easily making it hard to take the cleats off when I have to clean them after accidentally stepping in mud or something. I can find 4x12 and 4x10's at local hardware stores but in the past they have seemed to wear far more quickly then the original screws--different grades of steel perhaps?