Does using an 18G smooth poly cross decrease the durability of the natural natural gut mains compared to using a 16G or 17G poly cross. I tried using Pro-Line II 18G with VS Gut mains once and for some reason mains notched and broke much quicker than usual? Is this common or was it more of an anomaly? I want to try an 18G cross again, but if its going to significantly decrease the longevity of the string bed maybe I should pass. Hopefully my experience was an outlier. Thanks for your insight and help!