I did some searching but didn't come up with much. Probably because I didn't know what to ask for. I just picked up a Madison 8X10 cab nice and cheap. I will need to shlep this thing around and want to add some wheels. It currently has rigid casters attached to the bottom of the back panel and nice handles up top for rolling it around. Unfortunately one of the casters is in need of replacement. While I'm at it I'm wondering if there is a better solution. The rigid casters stick out a good bit taking up space in the car and prone to all sorts of disaster. They also seem like they'd stand a good chance of tearing out when I have to drag this thing up a curb or a few stairs. What I have in mind is a smaller set of wheels, mounted closer to the cabinet than the monsters that are on there now. Maybe skateboard wheels or similar, four or more of them, on an axle that spans from side to side. Wedge shaped brackets for the axle could be mounted to the sides of the cab, then an extra tressle or two could be across the back. Rather than re-invent the wheel (heh), is there anything like this in the market, or can I see what you've done?