I have almost returned the cover

I own Kawai MP11 and I needed dust cover of proper size. MP11 is very big piano.

However, when I tried to cover it up for the first time, the DC88 was too small. I could not pull it over the piano, because the rim was so tight that it started to crack. I was horified and double check the order, and it was right on it. So I wrote to the seller and complained about the improper size. Then I tried to pull it over again and the rim cracked and exteded itself about 10cm. So I have it covered finally. It looks nice, sleeky and what is important, it is dustproof.