Thanks! I'm not sure if it makes a difference,but this is the front (drive) wheel. From what I can see, the bolt holes are blind and I wouldn't have access to the other side of I remove the hub. However, I don't think it would be a bad idea to replace the seals while I have the wheel off, so I might remove the hub anyway.
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I like the plasma cutter idea, think I'll try that when I'm at the shop tomorrow. And I was planning on running a tap or thread chaser anyway just to clean them up.