For the badge, I have used a razor in a cutter, not like a box cutter but a diagonal razor. Gently (GENTLY!) pry the pressure washers loose, then slowly and deliberately and safely keep prying and prying and they will come off. Just take your time and remember how much easier it is for that razor blade to cut your fingers than it is to cut through some aluminum pressure washer and you'll be fine.
Again, be patient and safe.
Slainte!
Tim