His balls seem too tight as well. But worse he puts the caps on with fingers in front of the cylinder
He does not measure the filler, getting two chambers with one scoop. If you look you can see the balls are not all seated to the same depth.
Guess thats an example of how not to do it.
“If a cricketer, for instance, suddenly decided to go into a school and batter a lot of people to death with a cricket bat, which he could do very easily, I mean, are you going to ban cricket bats?” :- Prince Philip said after Dunblane