Reamed and shimmed back to correct size?
Not enough material; if you take enough off the head tube to fit a shim thick enough to withstand the press fit, the tube is then too thin-walled to be safe.
@gbj_tester started
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Not enough material; if you take enough off the head tube to fit a shim thick enough to withstand the press fit, the tube is then too thin-walled to be safe.