Got a 2008 300xc. I just did a complete rebuild and want to be 100% sure I've got the power valve right. Actually valves on the side not the big one. after cleaning them I realized they are different. So I made the assumption that as the engine speeds up they should open. Right? So I put them in that way. Did I screw it up? Other words when the main valve is open both side valves should be open. I think. I'm guessing someone has been down this road.