I have read on multiple forums about broken valve springs, wrong adjustments, stuck valves etc.
So I went for a short trip to my local club meeting in my 240z(l28) and came back with no issue. I tried to start it up the next day and it was noisy (valve train). I opened up the valve cover and found not one but THREE lash pads off. What the heck could cause such a thing? This car had sat for a very long time before I got it and I have less than 1k mikes on it since I bought it. On its second oil change since not sitting up.