Hello, I have been using Luxilon ALU Flouro 17 in the mains and BDE Perf 17 in the crosses. The racquet plays well for about 10 to 14 days and then the tension goes away on the Luxilon. At that point, the control and feel goes away and I start to spray balls all over the place. I have started to try other strings to see if I can get longer life on the mains. I am hoping to get somewhere around 3 weeks out of a set. When I did a full natural gut on the old racquets, I would get 3 weeks out of a string job before the tension would go away. Sometimes I would lose tension before that but it would mostly be due to moving the racquets between different temperature extremes (mostly between cold and indoor). Also, once I lose tension, I cut the old strings out and put new ones in. I do my own stringing. I have also used Gamma Zo True 17 but to me it seems too stiff. My racquet is the Wilson K95 ( 16x18 ). Any suggestions on what else to try? Maybe the Weiss Cannon strings?