Thanks for all your help, guys! I was able to get it to get the hex bolt to fit last night.

On the door handle carrier where the hex bolt fits in, there's a plastic piece. I was able to take off that piece and angle the hex bolt just enough to fit. I did have to use the old bolt though. When I used the new hex bolt at an angle, the new bolt didn't screw in all the way. It got really tight towards the end and there was a gap. Thanks for the tip, upallnight!

StephenVA,

I used the wax that I use to wax my motorcycle chain. I hope that works fine.