Hi I'm looking at adding a GGTS to my growing collection of PV's. I have a deal going with another forum member, and he has informed me that the telescopic part has markings/scratches, from the inside threading of the tubes. Is this a common occurrence with you GGTS owners? If i were to buy a spare telescope, is there a way to prevent it from happening again? Looking at the picture the markings/scratches look evenly distributed, which kinda looks nice and adds character.