I'm having the same problem with an old 55 I picked up on CL
... I'm gonna try polishing the glass with a buffer, like the type used on cars... I heard white toothpaste works well or some kind of metal polish. Here is what the haze looks like on mine while it's empty, was yours similar?
Also here's a link to a guy who uses this method to get rid of small scratches so I'm hoping it'll work for this white haze too. Don't know if this helped or if we have the same issue, just thought I'd share my findings just in case!