I have a 35-200 mold I have owned for 5 months or so. This one has far too many rejects and I can't figure it out. I have cleaned and oiled it several times but the problem still persists. fully half or a bit more of the bullets come out with a little "c" mark on one of the bands between the lube grooves almost dead center. Mold cleans up beautifully. Any ideas? Send it back?