Red line on nose even with loosely fitted FFM

My DME switched me from an ultra mirage FFM to a mirage quattro and now I am getting a red line on the bridge of my nose. I know this generally means the mask is too tight, but the mask is really loose (but not too loose) and the forehead dial is all the way out. The mark is not painful (nor is the mask during the night) but the red line does not go away for a while and gets worse as long as I use the quattro. I have been trying to use the quattro but because of this issue I find myself going back to the ultra mirage every night.

I have tried the mask liners but they cause more leaks than the intended mask itself, so I don't think it would work for me.

Any ideas?

Have you seen or tried this. http://padacheek.com/Forehead_pads.html or this http://padacheek.com/PAC_Nosebridge.html