I'm in the same boat...nothing seems to work and can't find anything on internet. Ended up just loosening them off a little (cause intake were super tight as well). More get up and go...sounds like a happy sewing machine so I guess that's about right lol! If you ever find out, can you post it here? thanks.
I think Fred had said yes and I didn't see any way to get to the tappet itself? All of mine were tight too. My DB51 now has 70kil on it and I just did the timing belt water pump.. This looks to be the first time in over 27 years the engine has been opened?
