The magnets do not want to behave. I have 3 pieces of steel temporarily underneath the magnet holders. I tried just a single piece but that was nearly impossible to remove. These can be moved by hammer and screwdriver and sliding them off the end after the filler has been finished.
The magnets naturally want to form into a stick. A little bit of filler into about 10 holes and then the magnets can be pushed into the first hole. Then by sliding the next magnet off the top of the first it should just drop into the next hole. And so on. The magnets are always aligned with the same pole facing out as required.
