The common cause of valve cover leaks is the PVC valve can't keep up with the blowby of a older engine. Check the PCV valve first then replace the gaskets. If it still leaks you have excess blowby from bad valves.

What was the result of the compression test?

All the other stuff is minor <img src="/forums/images/graemlins/cheers.gif" alt="" />

98 Montero with cold weather package
96 Toyota Land Cruiser, fully locked Mall Machine :-)