Get a note book. And write down what ever changes you make. Its the same for asphalt that we do. Sometimes you make a change thinking your smart and it hurts your e.t. That's why baseline is very important. You really need to get a valve spring tester and test your springs. Just throwing in springs is the old school way. It's work. But you have no real idea were to make improvements. Baseline, base prussure and arm weight in that order. What 60'foot are you running?
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