Got a 92 Civic LX with 213,000 miles.
My civic been leaking oil onto the spark plugs so every 2-3 weeks I clean them off, But this time I had a hard time with the spark plug in the 2nd cylinder. It was hard to turn from the start, after 5 minutes of turning with all my might I finally got the plug out, but the bottom 1/3 portion of the spark plug thread was stripped. Thank God it didn't break in 1/2.

Cleaned off the plug, and put it back in the same plug hole.
Wouldn't go pass 3 turns(I counted 12 turns with my other spark plugs). Tried to switch the spark plugs around to see if there was any difference(with 2nd cylinder) and about the same result.
I'm not trying to re-thread anything right now but would my best bet be to just try to get the plug in there was far as possible and hope for the best?

Or maybe just run on 3 cylinders...?