The Harman BP scraper was created years ago when the burn pot had a very slight curve and lots of room to get in there in work. Newer models such as the Accentra and the XXV have very deep curve pots and getting the tool in there often isn't much of a problem, but keeping skin on the back of your hand is if you want to really get in there and scrape. Here is a trick I have found to bend the tool and instead of poking and scarping, once modified, you can put the scraper to the bottom of the pot then press down and pull in short fast strokes. Whala! EVERYTHING comes out . Instead of poking forward, you're raking backwards. The curve allows you to get in and have a spring-like lever to torque all the bad stuff out with ease and speed.