I had the same problem with the quattro (old version). My nose got so bad I had to take 20 days off to let my badly damaged nose heal. That's when I found the Respironics FitLife Total face mask. That mask spared my nose, but has moved my bottom teeth closer together in the front.
Try a bandaid on your nose, or moleskin on the mask, but do get it healed up or it will get worse as you use the same mask.
Hi midi, What zonk said.
The HPA lanolin cream works wonders if you use nasal pillows.
Best of luck.