I have a 88 550 that was really hard to get started but ran really good when running. I did a compression check and it is down to 90psi. This engine is bone stock. I pulled the head and checked the bore at top and bottom. It is reading 75.08. Is this enough to justify boring the cylinders out or just hone and new rings? I plan on new crank seals while I have it apart. Is stock bore 75mm or 75.03mm. Thanks
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JS550 to bore or just hone and rings
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