The open end wrench is easier to get a better angle on the head of the bolt due to the tight space with the front wheel on. The bolts aren't very long - 10 or 12mm - and once you get them broke you can usually spin them out with your fingers.
Don't over tighten them when you reinstall - just snug them up nice. The plastic breaks pretty easily in that area for some reason.
Nice to have some of those "old school" tools around when you need them... :biggrin:
