you can either ghetto file down the bolts (i.e. pedal pins), or just get shorter ones
iirc, the stock JCPCs come with 21mm long and 18mm long bolts installed. i just took one of them to a hardware stall to get matching ones at 15mm long, so i could install the 18mm ones in the 21mm slots, and the new 15mm ones in the 18mm. they're still a bit too grippy to my liking since i also ride a lot of flatland, but they should be good for street riding/ big jumps