Were reverse valves on purpose?

[punkncat]

Or was it one of those "Darn I just tapped the wrong side! Oh well." kind of things?

[Lohman446]

They were on purpose because of the mini-mag plumbing set-up.

[Newt]

When the machine shop does a milling operation on the wrong side of the part, what you usually do is hand them the parts back and say "Do it over, but this time, you pay for materials."