Ages ago I saw a posting somewhere from a guy who had the same problem with his Atlas, so he replaced the stock lower legs with thick walled stainless steel tubing. The most difficult part was removing the castings that encase the clamps; he had to heat them with a gas torch (or similar) and bash them with a piece of wood until the very tenacious glue let go. Getting the feet off was equally challenging for the same reason.
Not only did the thicker tube solve the deformation and jamming problem but the extra weight added significant stability.
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