It's hard to tell from the photo.

I dunno ... maybe the graphics use up a lot more bandwidth ? Some forums limit their use out of necessity.

I was thinking that you might be able to couple a low speed DC electrical motor to the sheet metal roller with a Lovejoy brand flex coupling.

You could probably couple an AC motor to the sheet metal roller with a V- belt and the right size pulleys. A small one on the motor and a large one on the roller would probably give you the right speed reduction.