I have some older spd pedals on a road bike and I picked up 2 pairs of shoes from craigslist. The shoes I have been using are Shimano MO75 (M075?). They seem to fit great, but even after a short ride the outside edge of my foot gets sore or crampy. I have been walking around in the shoes this afternoon, and I haven't had any pain from that, but for some reason when I'm clipped in and pedaling I get the discomfort after only a short ride. I haven't done anything longer than a few miles because I would like to get comfortable first. Right now, the cleats are positioned just about centered in the openings.
Do I just need to ride a bit more and get comfortable with them?
Is there something wrong with the pedal or shoe?
Do I need to move the cleats?