Ive got a Briggs 5HP block that I thought had a bushing in the exhaust valve guide(See Pic). Tapped it and tried extracting it its bending the 2 Steel washers in using to extract it...it wouldn't budge(ive used the same tools on another block with no issue). Is it possible this is really a cast guide? I have the 9/32 B/S Reamer tool. Should I just use that to bore out the hole for the #231348 brass guide.
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