i have slashed my sword to store damage, have isg and can chu hover a couple levels but the chus keep getting stuck to the wall so i cant get any higher. any help?

If you've slashed your sword, then at that point it's all up to your timing. If you're up against a wall, you only have a few frames to pull a chu and shield after backflipping. If you can't seem to press the buttons fast enough, try putting chus on a different button.