I bought my Diamond Hornet used (3 months) from our local pro (it was his bow). He had installed a white pure teflon cable slide to replace the factory slide. He said he does so, as Pure teflon can only be white, therefore any slides that aren't white aren't pure teflon, and not as slick. Do any of you automatically replace the stock slide? If so, what do you use? If pure white teflon offers the advertised performance advantage of less drag so more speed, why don't manufacturers use it as a stock item to bump up the bows stated IBO?