I got a my first Excalibur (Micro 360 TD) and the original string came with it won't more than 2 weeks target shooting! I wax the center serving and lube the rail every 10-20 shots, but the center serving was destroyed within 100 shots (the serving frayed and not able to shoot anymore)... I was wondering if it's normal to everyone? if it is how excalibur eat string, any suggestion for string selection? Is the excalibur branded series or 1993x better than 1993? but it seems they are made from same material so I am quite confused... Or is it better to choose a third party string ?