Gamo Gamo Urban Barrel Band

I have two gamo urbans, one the barrel band is holding the barrel downward under great pressure. This one seems to be better with the band, it brings the barrel more in line with the block / scope mounting so that I didnt have to crank a bunch of turns on the scope or try to shim the scope a ton. Sort of working like a tensioned barrel. I think the bands arent very good on the urban, unless they are under a lot of tension - they can hold the barrel off kilter if it does get bumped pretty strongly, seen this before when the non tensioned one gets tipped over. I do have to be careful not to bump that barrel, so I think it might be better without the band.