You're welcome. Lascauxcaveman made a great point, too. If this rack is aluminum (which most of the higher quality ones are) the metal should only be bent once or it will probably fatigue and break in the near future. If you're not comfortable with it, I'd recommend getting someone to help who has experience working with aluminum.

As for the mounting hole on the bottom rack arm, a small round file should make quick work of it---especially if the rack is aluminum. You should wait to do the filing until after the bend has been made, then mark where the hole needs to be with a pen poked through the eyelet.

Finally, one more idea: If you want to avoid bending the lower rack arm, you could fabricate a small piece of metal to bridge the gap between where the bottom/rear eyelet is and where the bottom rack hole needs to be. If I understand you, you need a spacer and this piece could serve that purpose, too. I think this would be a better place to do this than at the upper arm as envisioned in your original post. A small piece of rectangular aluminum with two holes should suffice. One end would mount to the existing bottom/rear eyelet, the other would mount to the rack. I'd use the strongest aluminum you can find or maybe use steel.

Kind regards, RoadLight