To Don, Fred, Joel, Bob, Mark, et al, Thanks for all your good suggestions! Mark's description of his custom made machine gave me the idea to make an overlay of heavy walled square stock bolted to the existing Colson truck with its ridiculous bow-up in the center. This bow is so bad it interferes with the ability of the front wheels to cast properly. No amount of shoving the center plate down and re-tightening adjustment bolts helps. The band/orchestra instrument tech here is an accomplished welder who owns his own equipment, so I think we may have the problem solved. Funny how small moments of (projected) victory can be so exciting...... Greg
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