Nope, that picture isn't misleading. I was having a problem with this engine in this position, the muffler kept coming loose in flight. I tried evertyhing I could think of to get it tight enough, but it always came loose. So I came up with this. I use some steel wire rope to wrap around the muffler to hold it in place. The wire rope is inside of fuel tubing to prevent metal to metal contact. This has worked great. Tons of flights and it never comes loose any more.

Ken