Re: 239 bore.
As a quick inspection, see how much ridge there is at the top. As someone said you need to remove it to prevent breaking rings. Wear typically occurs more at the top due to the ring pressure. Someone said with just new rings you're putting a band aid on it but if funds are lacking and you just want it to run reasonably well, new rings may do what you need. If this is an 8ba and this far apart, new bearings might also be a good idea.
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