It's also true, though puzzling, that the "engine" that produces the Similar Threads links below is better at finding related threads than the search function in the forum. Perhaps this is because the auto-search that finds those Similar Threads is using all of the text in your post rather than just the few terms you'd be likely to use in a search. More than once I've posted a question only to find the answer under Similar Threads, even though I searched for it myself before asking, as you did.

Rob