I found that I'd made a boolean diff on a solid and I now realize that I need to get rid of it. However when I tried to delete the faces I couldn't get things back to the state prior to making the boolean diffs. Could someone take a look at the solid for me and offer some alternate suggestions for how to do this? I'd prefer not to have to rebuild it from scratch. Attachment shows the area on the solid I'd like to take out and put back to being smooth there.