Evnin gang, I don't recall a formula for the offset, but if you use an extension you loose 1lb for every 12in of extension. I think, it's been to long??? You'll be fine, use the line wrench, with the box end if ya can get them but even a line wrench will work. The plain open end may slip??? Like someone already said it won't break at fifty or come loose at thirty eight. Bill out. πŸ‘£πŸΎπŸ‘£πŸΎπŸ‡¨πŸ‡¦ It may not even be needed, I swear some engineers do chit to pizz of mechanics 🀑