I get what you are saying.
You have the part number of the spring. What is the recommended retainer? If these are all part of the "cam kit" then the argument should be with the cam manufacturer?
Maybe all of these "issues" contributed to the failure but I'll be you a nickel that the design of the arm gets modified so that this can't happen again. Bottom line, the arms failed and they shouldn't have. Use the stainless steel roller rockers instead of aluminum. Greater tensile strength. Would they have failed too? I don't know?
Yes. You paid the builder to make the RIGHT decisions for you. Got it!
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