Thanks for replies.
I can't remember what legs came with what. I put the largest on my bally (which has the the wrong larger rear legs) and the rest on my Sterns. I had them sandblasted primed and painted them with hammer fiinish grey along with my coin doors. One game may have come with gottlieb 27 inch, and the other with 28.5 inch and i mixed them up without knowing. My other Stern which I have never touched came with front 27 inch and rear 28.5 inch, which is strange, maybe to make it play faster bt original owner (i also found out just yesterday it has new modern Stern flipper mechs in it). Anyway my games have been playing wrong.
I have lifted front height with levelers to 28.5 inch and Quicksilver now plays like a dream (this game deserves the hype it's geting).
I will mix/match/get some new legs so all my games are correct.