I had the exact same pedals (505) on my bike. Let me tell you, those pedals SUCK. Get some new ones, seriously. They are 100 times harder to clip out than any pedal I've tried. I think I cracked my sternum last year on my second day with those pedals. I couldn't clip out and I fell on the end of my handlebars on my sternum, perpendicular to the trail. OUCH.
I have Ritchey's now.