[john walker's workshop]

1/4" drive 10mm wobbly socket w/extension for the hard to get one. Regular 10mm socket w/extension for the other. Best to try to get the lower sensor out first and glue a 0.8mm washer to it, loosen bracket bolts just enough to adjust the clearance, and tighten the bracket. If you can't get iot out, then the bracket comes off.