+stihl +361 +muffler +mod +lakeside
Search by posts instead of threads. Include as much information as possible and then work backwards. Put a + sign in front of each term and it will only return posts that have all of the terms in them. Then you read what you want, and if you need to learn more, you start deleting terms.
+361 + muffler +mod
will give you more posts and more junk. Eventually, you will cut down the chaff until it's not worth your time anymore.
Searching
Stihl 361
is garbage. You will get everything that has either term. That's half the posts on this site.
Just get a little specific, and use the + sign to include everything.
I tried the + thing. I think the key is to search posts as you say.