I haven't done it, but I can't see where using the larger diameter .140" bolthead with the .095" parts would be an issue other than if you had an "UT-OH", blown primer and etc. Part of the diameter fit is to help keep any escaping gases venting out the hole in the bolthead and out the twin ports in the receiver ring to some extent limiting what can blow back into the bolt body.

As far as alignment is concerned the pin tip diameter itself is the determining factor. In fact the bolthead retaining pin is kept in position by the firing pin, not the other way around. Using a.140" retaining pin with a .095 firing pin would allow the retaining pin to protrude outside the bolt body one side or the other and only partially engage one hole in the body, not a good situation! Back past that everything just kinda flops around where it needs to.

That's all I can think of at the moment, maybe Fred will jump in with some addition insight.

Bill