If it's so snug it risks damaging the outer sleeve how about putting it in the clear LP jacket that you're storing your LPs in, i.e. outside the LP sleeve -- if you use a nice well sized one like this you will have plenty of room
http://www.sleevecityusa.com/ultimate-outer-5-0-record-sleeve-p/9390.htm
http://www.sleevecityusa.com/ultimate-outer-5-0-record-sleeve-p/9390.htm