My putting style evolves as I get further from the basket. Generally I push putt with loft, and starting at about 15-20 feet I need to get the disc above the band at the apex of the loft... I have at times tended to hit the band too much when I'm inside 15 feet and I have trouble putting straight into the chains when I'm used to an arc in the shot. If I try to forego the loft, I end up hitting the basket because I'm too delicate with it.
The solution for me has been that inside 15 feet I putt decidedly nose up, and straight into the middle of the chains. Nose up keeps the disc aloft longer on a much flatter and more direct loft that doesn't get up to the height of the band. The added benefit is if you are low, the disc slides across the rim and goes in. But nose up is the secret ingredient (for me) that can make short putts as easy as they should be. Outside 15 feet, my disc is always flat.
If you're hitting the band from outside 15 ft, I'd say you just misjudged distance to power, and practice is the solution if it happens too much.