Maybe try to cold set the dropouts. I had this same problem with one of my frames. No need to file it, just (gently!!!) cold set it with a chisel or something.
success - used a stanley knife to scrape away some excess paint in the drop outs on both sides and the rear wheel seated fully
@WimVDD started
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Maybe try to cold set the dropouts. I had this same problem with one of my frames. No need to file it, just (gently!!!) cold set it with a chisel or something.