Im working on a production of Thoroughly Modern Millie and I need to make some rolling desks. My Producing artistic director decided to order $1000 worth of desks without asking me and ended up getting those combination school desks with the angled back legs. It’s made of 1 1/4” steel tubing. I’ve removed the feet to attempt to attach some 2” tall swivel casters but because of the angled legs, too much pressure is applied to the joint between caster and leg. It fell apart. Im looking for some suggestions on how to do this quickly. My next idea is inserting a dowel and drilling on an angle to get the caster to sit right. Thoughts?