Well if you're interested in a gasket removal tool and a paint scraper, come we DIY and you can try both. Then only decide which one is the right method for you. I got my tools at non ACE-Hardware places. ACE tends to be more expensive (significantly more) although their variety is extensive. Places like MTIS and Knights Auto are way cheaper and also have shitloads of tools. I don't recommend a knife btw, I've done this method before and snapped the blade which was a bitch to remove.