RE: New clutch..but not really working :/
Was it working like this before you changed the clutch? If so it may not be the clutch. It may be the transmission or one of the dog bones. It can be a lot of things. If you have one wheel not biting the ground it can do this. It will crawl along the track instead of zip across it. The diffd will transfer power to the wheel with the least grip. So if you have a broken hub or a pin missing from your dog bone you will have this same effect.