Rifles on tripods is very new to me. Do most try to use the ballhead on the tripod to lock the crosshairs onto target? In my limited experience on a tripod, desmond dlow55 and desmond db44 ballheads with an arca attached rifle, there is slop and shift even after it seems tight. Leaning on a tripod leg has moved the crosshairs. I end up locking the crosshairs much lower than the target and letting them rise up onto it and needing to muscle it slightly. Is it a better technique to instead only have slight friction in the ballhead?