Quoted from cscmtp:

Well let's see, I used to own an Avengers LE, and have owned 20 different pins over the last 20 years of being in this hobby. So am I not allowed to have an opinion? I think Avengers was BY FAR, the cheapest built Stern I've ever owned, and I've owned some good ones (ACDC Prem, TSPP, FGY, RBION, IM, SM, Wolverine LE, LOTR) Even after being "dialed in" and getting some nice mods (clear out lane plastics from Hooked, ZDoor's Tesseract cube, etc.) I just found the game to be cheap, and it just wasn't a lot of fun. Its like the physics of the table were off. I've talked to someone pretty connected at Stern who acknowledged the same thing.
Glad you guys like yours, but in my opinion, that pin should have never left the factory the way it was shipped. And its a shame because its a great theme, and I'm a huge Marvel fan.