The instructions say to "double flush" the outboard five rivets on F704 in the eventuality that you want to change from tail dragger to tricycle gear. I find that highly unlikely but I'll do it anyway. You can see in the first picture my method for reaching the holes with a countersink bit. This wasn't hard, just a little risky since there's no stop on the countersink bit so it was a bunch of trial and error. Now to start taking it all apart.
Bunch of extensions and took the countersink out of the stop mechanism.