A few months ago I was asking around for ideas on what to do about my 96 K1500(163Kmi). I had a quack mechanic that over looked the real easy problem of lower intake gaskets and disassembled my top end. I have finally got it put back together(by another questionable mechanic) and it is running fine aside from a lifter(from what I was told) tapping. I really don't want to deal with this guy any more either as he had my truck from 06/08/2010 to 07/23/2010 just to rebuild the top end. He(the mechanic) told me that I should change the oil and filter and go with 10w40. He thought there was water in the oil from sitting so long. I did that today(didn't ad any additives) and the ticking is still there. Long story short what should I do aside from go back to him?