When you need excellent Beretta service you can also rely on Rich Cole. He is "Mr. Beretta" here in the states.
Even if it is a warranty issue, he can get it squared away with Beretta USA in MD.
My experience with Beretta Service Center has been limited, but in the few instances it was satisfactory.
I have heard horror stories though. Rich Cole knows Beretta inside out and is excellent to work with. See www.colegun.com
Another resource I have the personal pleasure of sharing is Dennis Devault of Devault Industries in Canton, OH.
Dennis put one of his 3/8" high ribs on my 682E and now I have a poor man's K-80 Sporter.
Jon Kruger, Bill McQuire, and Gebben Miles all like the higher ribs for heads up shooting, and it works for me too.
I think Bobby Fowler is shooting Devault ribs on his Browning Sporters, based on recent photos in clay publications.
Not for everyone, but wonderful for some of us to discover the higher ribs in sporting clays/5-Stand shooting!
The most consistent advice being shared on these threads is sure enough the truth - find what works for you on your budget. Make sure it fits, whatever you purchase, regardless of type or brand.
I am in the process of having Devault put the 3/8" rib on my Browning 625 28 gauge 32" gun, so my two go-to clays guns are set up the same.
Can't wait to go heads up style on my 28 gauge too!
Break them all, friends.