don't feel bad bro,a dude i know in racing ordered a crate racing motor off the net,we installed it,zero oil pressure,we pulled our hair out saying WTF?we tried everything .....are you siting down?we tore it apart and it had..drum roll please=NO CAM BEARINGS...AT ALL.figure that one out......very very well known builder,these motors suppose to be dyno..etc.......you know the deal.....needless to say 2 days later a NEW crate motor was at his doorstep......how can this happen.im not sure.....people grab assin,bullshitting .not doing their jobs.....shit happens,just like you and me.....sometimes the parts are outta spec also..it happens and its stressfull.....go fast hop e you find a solution....