I'm exactly 1.25 inches less than you, and I have your exact problem. I observed the slipping occurring not between the [words=http://www.mattersofsize.com/forum/showthread.php?83577-Length-master-official-order-thread-now-shipping-06-16-2014!!!]LM[/words] and the wrap itself, but between my penis and the wrap. So I started wrapping tighter. I only do 30 min sessions in that beast, so I never really lose circulation. That has prevented any further slipping from occuring. Hope this helps!