I turned up for a reserve repack with the reserve and nothing else, and went home again. My rigger inspects the whole rig, not just the part she is being paid to pack.
My reserve repack was due, so I took the rig to Jane, one of the few riggers in Singapore. She had transferred my Saber 3 main from a friend's rig to mine previously, and had found a minor defect in the slider at the time.
When I handed the rig over she told me she would not repack it, because I had not brought the replacement slider. I had only planned on the reserve; the main was going to be packed by the dropzone packer. That is the assumption that cost me the day - the repack is a reserve job, but the inspection is a whole-rig job, and she will not sign off half of one. So I made the same trip twice to bring her the slider.
She asked me to demonstrate my cutaway procedure, which I did correctly. I left the rig and my luggage with her.
When I collected it a few days later she went through what to watch on it: the slider defect, the handle, the safety stow loop and the reserve closing loop.
Things I now know. Bring everything, not just the part you think is in scope. A slider is specific to the canopy brand and model, and it is worth checking the size is right rather than assuming the replacement the manufacturer sent is correct. Clean stains off the rig, because they degrade it. And fitting a main one size up is possible but not easy.
The 180-day clock is the part that is easy to lose track of - there is a repack date calculator for that.