Ezz - in the end I wasn't game enough to try it!! LOL.

MD - THANK YOU for the upsizing tip, put him in the next size and so far 2 nights, no leaks!! Der...can't believe I didn't think of that myself. They don't seem to be too small on him though, so I didn't think of that. The rise on the bigger size is much higher, so that's probably what stops the leaking.