Levar 15, mock bolt wedge grinding against upper.

Hi all,

I have recently got myself a LevAr 15 from G&G.
However I noticed a problem with when you rack it. There is a little nub / wedge on the mock bolt I think its called that seems to open the dust cover when reloading. This scrapes along the inside of the upper receiver of the leaving a shiny white scrap going the same length of its travel.

Is there anything I can do about this?

Thanks

X