Been shooting and MBG 5 pin slider for over three years and love it. Also been shooting the same arrows the victory rip tko's is the same fletching and tip setup. The weight of these arrows have remained consistently between 3 grains plus or minus year over year. I just got a brand new batch of 24 which I put together. I weighed each one and they are still hitting the arrow weight that I always aim for most arrows being only 2 grain difference 3 grain difference max. Today I went to shoot those arrows and only really shot three of them but the oddest thing was happening to me. My fixed pins were fine but when i used my slider I was shooting high at all ranges (ex I had to put my slider at around 47 to hit at 50 otherwise I was like 6 inches or more high. At 90 I was way high so this seemed to be reinforcing my though that I might need a new sight tape. It was the first day I've shot them so I'm not changing anything right away but anyone have any input on this? Could it have something to do with the spine of the arrow? They still fly pretty true with my bareshafts at 20.