My friend is using a Gorb on his K6-2 on an Epox mobo, I believe. Before putting it on, squeeze the raised portions of the grooves the guide pins travel on with a pair of pliers until the only rise about a milimeter up from the clip instead of 2 to 3. If it's too loose then pull those parts up a tad until it's snug. My friend broke off a lug because he didn't do that, but he fixed the lug later and is still using the Gorb.