Edmonton Oilers second power play unit is woeful. How to fix it?

The Edmonton Oilers power play is mediocre so far in 2018-19, 14th overall with a 19 per cent success rate. The top power play team, Winnipeg, has a 34 per cent success rate. That won’t last for Winnipeg, but the question is whether or not the Oilers power play will trend up or trend down. So far they’ve been trending down after a hot (lucky?) start to the year.
Edmonton started out the year with five left shots on the top power play unit and five right shots on the second power play