Where you are so sick of taking a marker apart and teching it that you just go "meh" and run it as is?
I have one marker that I have literally taken apart probably 50+ times. It works, just not as pretty as I would like it and it would benefit from a good polishing, but I just can't bring myself to take the darn thing apart again. So it's going to possibly stay ugly for awhile.
Or for another example, I have a regulator with a SS center section with tool marks on it that if it was disassembled I could easily sand/polish the marks out, but I just can't wrap my head around taking the stupid thing apart becuase it just sounds like a (female dog) to do. So the tool marks have sat there for about 1.5 years.