inward fork/bars help

so I have a threadless extreme fork with inward one piece bars on my scooter. I also have a very old crappy headset and I just recently bought a new one. the only problem is, is that i can't get my bars off of the fork so that I can take the fork/headset off. are there any tips to loosen the bars off of a threadless fork that wont destroy a paintjob?
 
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