Having put on 2 new Gatorskin tyres about 2 weeks back I was today checking them and noticed 2 very, very small bits of what looked like glass ( or maybe some sort of grit ) in 2 sections of the rear tyre. I have gently pried these small specks from the rubber being fearful of motion forcing them thru to the tube. Is this the correct thing to do ? If the answer is a resounding NO I`ll give myself a quick cuff round the head. Ta for any replies.