Thank you both for your suggestions. I actually have three backs, one for low contrast shots, one for high contrast shots and one for neutral (5 zone) shots. This way I can increase or decrease development of each roll accordingly. So, I really want that 3d back to Worley properly. You are probably correct that the repair cost is likely near the cost of another back, but there is no guarantee that the new back will work properly. A CLA on my back would give me comfort that I have a back that will work for years to come.