Conflicting answers-bolt size removal drum

[tmontague]

I've never backed off the shoes as I found it hard to do with the drum still installed since that little "window" behind the shoes with the rubber plug in it is so small and you cannot see what you're doing.

I've just air chiseled the drum off and every time I remove it I take my air grinder and grind down the lip that is created so I don't have that issue in the future.