This may be too generic but I've been stuck on the final segment of Chapter 6 for weeks, literally. I leave the save spot and buy some Elixir's. I have 7 partial Elixir's and 1 Great Elixir. By the time I get to the Boss I only have 1 partial Elixir. I am having the most trouble with the tow motorcycles. I waste most of my Elixirs on them. What is the easiest way to defeat these two chumps?