Go a report today that one of the castors failed on my 1100 combo while being moved out of storage into the rehearsal room. Second time it's happened. Ordered some 360kg rated 75mm castors instead. I know they are meant to sound better on the floor, but be realistic!
Incidentally, I've found that it sounds less bottom heavy but much more balanced when at least a foot, preferably two from the wall behind it. Anyone else had similar experience (it's 4x10)