I got my 71 240Z started for the first time today. It idled around 1000 rpm (very rough) and the engine was shaking kind of bad, and a loud ticking noise coming from under the valve cover. I took it off to investigate, and this is what I found. The lash pad was sitting on the floor of the head and looks to be fully intact. The valve spring retainer on the other hand was mashed up a bit and is a little tight for the rocker guide to fit into. If I want to get the spring retainer off, I'll have