Like i said earlier, it is most likely a manufacturing defect. However, looking at your photo something else also occurred to me. If you rotate a record in its inner sleeve, and that record is not clean or the inside of the inner sleeve is also contaminated, then it is very possible to cause the damage to the groove that I see. Many of the current inner sleeves, particularly the one's that are coming on some of the new re-issues are made from some kind of plastic. They're not made from rice paper or the like...as are the excellent MFSL inner sleeves. I make it a point to NOT store my new LP's in the harder plastic sleeves...or for that matter in any other sleeves like the old paper ones from the day ( only in the MFSL inner sleeves). Plus, I also make sure that the inner sleeves are clean on the interior. VERY important to also clean the LP before putting it into any inner sleeve.
I'm not saying you have stored your LP's incorrectly, but it is always best to replace those inferior inner sleeves with something that can do no harm. IMHO.
Just to say that in many years of playing records and putting them away in sleeves, this is the first time that I have seen this phenomenon of non-fill vinyl. Also the dust on the one LP is untypical since that disk had been out and in its sleeve and wasn't clean as usual. (Also we get dust from the Sahara here on the Iberian Peninsula.) Also it seems that the groove damage is too "surgical" to have been caused by rubbing on the inside of a record sleeve, at least on my two LPs. Good advice though and it's also important to bulge out the sleeve as you insert the disk.
