Quoted from MikeS:Did they change the stock springs to orange now? My early run Pro came with a green spring which I later upgraded to a stronger orange. The orange one is the perfect strength in my game. Green was way too weak. I had a purple in there for a while and it was too strong.
Whether Stern changed the spring from green to orange, or installed green ones by mistake, hard to say. Stern has an orange spring specified in the manual. Right now I count four different skill shots off of the plunge. A super skill at the top of the loop dropping down to the upper left flipper, hitting the stand up target, normal skill shot at the extra ball\x multiplier stand up target, super secret out the left outlane, another super secret by shatzing the stand up target at the top of the left inlane with the right flipper, pretty cool.