Mike Leiter
TVWBB Pro
Leo, where did you get your casters?
You can also get them at Home Depot. Its the same style ones I have used on both of my smokers. I think Leo used the 3" ones but I opted for the 2" ones as they were still rated at 80lbs capacity each. They have them in locking and non locking versions.
http://www.homedepot.com/p/Everbilt-2-in-Threaded-Stem-with-Brake-Non-Marking-Rubber-Caster-4031245EB/203672395?N=5yc1vZc29f