Custom Self-Inflating Sleeping Pads

I purchased a couple of the ALPS XL self-inflating sleeping pads (with pillows) and we used them on our recent trip up into Northern Michigan.  The pads themselves are very durable and seem to be quality made items, but are too long (77" in length) for the 72" width, wall-to-wall sleeping distance in the trailer.  Basically the pillow ends up being tilted upwards and you slide down or nearer to the wall with your feet.  In my case I had to sleep on somewhat of a diagonal position and my legs were cramped up and I ended up with some knee pain.  


I'm wondering if any of you sleep wall to wall and use a self inflating sleeping pad and what your recommendations would be in purchasing a suitable self-inflating pad that is 72" long (without the pillow) and would at least inflate upwards of 2-3" in height off the bed?  The ALPS self-inflating XL pad is 30" wide, 3" max lift and 77" long and it's too bad they don't make the 72" pad with the same dimensions minus the pillow.  

Any thoughts and suggestions?  

Thanks!