I removed my old tiles and are trying to figure out if it is better to just replace this drywall or try and scrape the existing stuff off. Most of what I’ve read is to replace it but the last think I want to happen is going to start that and it turns in to a bigger job. New countertop goes in Tuesday.
UPDATE: so I used an oscillating saw with a scraper and was able to get it extremely flat. So I think now I can finish up the little parts. Paint/seal it, then coat to level it and I’d be ready to tile!