Aileron bottom skin rivets to spar

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Hi Guys

Has anyone substituted the solid rivets going onto bottom skin on aileron to spar with pop or cherrymax rivets? My bucking bar does not fit nicely in between the skins and everything is blind. Joe from van's says that one can use mk319bs but they haven't tested this.

Any advice?

 

[N427EF]

Tungsten Bucking bar

Three words of advice:

Tungsten bucking bar.
It will be the only bucking bar you'll use for here on out and you'll wonder why you didn't get it sooner.