No thank goodness both were picked up during teardown and service... the Scubapro G250 mainspring had a small kink to it, not parallel.
When I flexed it slightly it snapped in half right at a rust pit, with a helical fracture pattern.
The second was a Sea Hornet Mk V which had not been rinsed off properly and then stored for many years... the spring recess was a mass of rusticles and the spring came out in two pieces, having failed near the ground and closed end
For regs that still have widely available parts (like Atomic) I routinely replace the first stage springs if they have sagged more than 1mm from new height. At $17 each it is a cheap insurance policy!
When I flexed it slightly it snapped in half right at a rust pit, with a helical fracture pattern.
The second was a Sea Hornet Mk V which had not been rinsed off properly and then stored for many years... the spring recess was a mass of rusticles and the spring came out in two pieces, having failed near the ground and closed end
For regs that still have widely available parts (like Atomic) I routinely replace the first stage springs if they have sagged more than 1mm from new height. At $17 each it is a cheap insurance policy!