Me either. I don't even know many tubes I've pinched. But the upside is that I only vaguely recall the last tube I ruined. Doesn't happen very often any more. Last year I pinched a tube, really didn't know why. I've been changing tires the same way since the ol' days of Hi Point "Red Dot" tires.... anyway, I am a little pissed, so i get a second tube. Now, because I am pissed, I am not being patient..... and guess what...... I was so mad, I bought and tried one of those foam Bib Mousse tubes......cripes, what a unbelievable PIA battle to get that thing mounted and set! Then I sold the bike.... never again i'll stick with pinching tubes LOL.