I think JRob had a post on a while back on this subject, and recommended un-doing some of the knots/ pulling the hair with a tweezers, -and I would think that would be damn tedious. Probably best not to use a thinning scissors too much on the crown area, but as Fred said, OK for blending in -- I have used one generally to thin out my last system --didn`t really present any noticeable issues for me --just tread carefully. 65% IS a pretty high density -- perhaps 55 -60 % would be more realistic as you`re `` somewhere in the middle`` ---will allow for more scalp show -through, and if you still feel the density is on the high side, you can do a more gentle thinning --Paul.