A bit of pedal servicing required. Take off the dut cap, loosen the lock nut and washer inside and push the cone underneath round with a small screw driver until the play is taken up. Then retighten the lock nut. You often have to do a this a few times until it is just right as tightening the lock nut usually makes it over tight. Hours of endless fun adjusting pedals ! Put in a bit more grease while you are there.