Good to work with until the counter is measured wrong and they blame you for uneven walls. They suggest you take the existing countertop out for best results and measurements, if you choose not too, again your fault the counter is measured wrong. We put an addition onto an existing kitchen, so the cabinets were not at the same height and required some shimming, again, this is why our counter is not the proper shape.
Watch out, they couldn’t care less. In fact Wayne will tell you it was measured properly. Check out the photo and see for yourself what a proper measurement at centreline stone looks like