I have still not been able to get out the center pieces of my wheels. I am attaching two photos - outside and inside - if someone has a bright idea. The shop managed to get this one lose and scratched. I can turn it both ways but it does not come out. So far I have resisted using much force in case I damage the threads. But I am not even sure the threads hold it in place - or whether the threads are just for looks and to hold wingnut. Any ideas, before I have to find another shop? Thanks.
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