I've had one ever since '04 on 3 different bikes and never had a problem. Mine always came with instructions though. I cleaned my tank really well. I put mine in the oven until is was REALLY warm. Went out while the tank pad was soft/warm and put it on nice and straight. If needed you can take off and re-apply a few times if you mess up. Then don't touch it for 24 hours. I even applied heat from my wifes hair dryer when I put it on just to reassure me that the glue was still tacky and warm so it gets a nice bond. Then after a few days it is on there like concrete! Don't worry, they're easy to apply.