I think your gonna come out of this OK. First find the preload and check the geometry & post what you find. I dont think you generated more than the normal amount of shavings that happens during breakin just from the lifters clattering. Might just need a pushrod change. When the time comes cut 2 strips of paper for a ruler & turn the crank till the timing mark is 2&17/32" (40 deg) past TDC on #1 compression & spin the drill to preoil/confirm oiling to the pass side then turn the crank a bit further clockwise to 5" (79 deg) BTDC #6 compression & preoil/confirm oiling to the dr side. continue turning the crank a bit clockwise till it is at 15 BTDC for a wild cam or 10 BTDC for a mild cam & time the dist to the #6 plug wire if the dist has been removed for this. Read "breakin secrets" at www.mototuneusa.com