[QUAD-L] Sheering on Cushion

[Dan Tessiatore]

I am having difficulty sitting on my Quattro Roho as it seems I am sliding to 
the side creating pressure sores.  The cushion is inflated as instructed and I 
have a hip guide.  I think the problem largely stems from my pelvic obliquity 
as my hips rotate up to the right and down on my left side.  Any suggestions on 
how to address this problem of uneven hips and sheering?  Thanks, Dan T.