It's all about giving yourself room to turn around. Look at the path you want to take and which way you need to be pointing at a narrow bit. This will often involve going back to a bigger bit of the path to turn around so when you roll end over end to move one space left, right, up or down. Trust me, in the later stages you have to go around 5/6 times before it works. Think ahead. Remember the orange squares don't like too much pressure so you have to be on your side then! Level 30! Whoa, good going. Still trying to get past 17/18.