I recently switched from clipless to flats and have noticed something new to me... When I try "pedaling circles" and really start pushing (i.e. climbing a hill) as my foot comes over the top of the pedal stroke the pedal sometimes flips over forward causing me to lose footing. The pedals I'm using are Wellgo B-103's, I'm thinking that it's the pedal thickness that's biting me here (as well as technique), anyone have a similar experience? I was looking at the Spank Spikes (thinner pedals) and they claim to reduce "pedal flip". What do you think?