How to fix an offstring?

[K1LCr09]

Help! My freind aksed me if he can see my offstring yo-yo and I agreed.
He later came to me saying it not screwing, I tried screwing it and it wouldnt screw.
I think there is something missing on in the outside end.
Here are some photos:

(The yoyo is YYF sky dancer btw)

[JosiahR (Josiah Ratzlaff)]

Yeah it appears that the nut that the end of the axle screws into is missing.

Should look like this:

[K1LCr09]

Okay thank you so much!!

[JosiahR (Josiah Ratzlaff)]

Yeah they can tend to pop out when you take them apart. Something to be aware of on the Yoyo factory 4A yoyos. (They are great though, I love my sky-dancer!)