First of all, STEP ONE - get rid of those lousy stamped nuts. Use the high-strength12-point nuts. Lots in the archives but if you can't find the info, then PM me.
Second, although it is a tension application, the design of the saddles precludes sufficient bolt pre-load to clamp the assembly tight. So, I'm afraid that a poor hole will allow movement of the joint. Basically, the saddles are fit so that when torqued to the rather light pre-load, the ends of the saddle are not supposed to touch the bearing plate. There is supposed to be a gap. With that assembly, a sloppy hole is going to allow movement at every landing.
I think I recall that edge clearances are kind of marginal through the aluminum parts, but the real bolt contact that matters is the steel weldment. I would consider reaming that hole smooth with an adjustable reamer, to the very minimum amount needed to get a clean hole, and then turning a thin-walled sleeve on a lathe that would be a light drive fit into the hole and provide normal close clearance hole for the bolt.
I have the tools to do this, so if you need help, I'm not too far away. If weather would cooperate, I could fly over, we could ream the hole and then I would fly home, machine the sleeve, and then deliver it to you.
Oh, and maybe a moderator knows how to re-size your pictures so the thread window is normal size?