Selecting the Best Directional Control Valve Center Position

I get that you don't believe I'm actually building the world's BEST backyard coaster. Well, It's not finished yet, but we are making progress. Here are some pictures to prove it. Kiddo's...

A number of years ago, I heard that if you ever want to build your dream home; you will need to do it at least twice. Why, you learn things the first time and make adjustments. The same is true for...