swaddling troubles.

Jack will only sleep when swaddled. He can fall asleep with out the swaddle but his startle reflex is still really strong. We were using the target zip up swaddles but the little bugger has figured out how to get his hands out and he scratches the side of his face. We did try the Velcro swaddles but he's long and thin and they're never tight enough! So I've resorted to using a cot sheet till I can get something better.