I don't seem to have a proper wrench that's thin enough to remove the castor wheels. I'm getting ready try and finally mount my smoker to my harbor freight cart but I think I need a special wrench to remove the wheels. Any advice from those of you out there for removing the wheels (i.e. wrench size? is it a special wrench?). I understand the bolts for table mount should be M10 - 150. I guess I'll run to the HW store quick and see what they have available.