This dishwasher is about a half inch too tall. Cutting a slot into the underside of the counter would solve the problem, and the lip of the washer would hide the cut, but I don't know the best way to actually cut the rectangular chunk out of the material? Hacksaw? Jigsaw? Rotary tool?
Note that the spring and metal brackets on top can both be removed with no ill effects.
EDIT - to address some questions in the comments:
- this is a very old home that an acquaintance has just moved into
- this is a second-hand dishwasher from the acquaintance's previous residence
- obviously we want to make a few changes to the countertop and flooring as possible to get it slid into place