Your discription was so accurate and clear, no pictures were needed. Its also an excellent resource for part numbers and so on. Did do the job without removing the valve covers though and that didn't seem to present a problem. But I'll be doing the timing chain in about a month, so I'll be rereading the section on cam oilers at that time.
Thanks again for taking the time to document your repairs so well!!
1988 420SEL 170K