Missed rivet on top skin - Which blind rivet

[JDBoston]

I missed a single 426AD3-4 rivet on the wing walk area top skin. So far even my forced child labor bucking bar partner aka my son, cannot even reach it as it is a narrow place third rib in.

What blind rivet would be a good substitute here? I will ask Vans as well but I am pretty confident that a single flush blind rivet will hardly cause an issue.

Thanks. Good news is that this is final rivet on the wings.

[Mel]

That would be an MK319BS.

[aturner]

And you will, of course, run a #33 drill through that hole.

[JDBoston]

Thanks everyone. #33 it is, yes.