I also just ordered my second US41 from Tower last week while they were still priced at 207.99. When I received it, I too was surprised by the box which had been opened and re-taped, and the old two-piece black aluminum muffler. The first US41 that I bought from Tower about 6 months ago came with a beautiful cast aluminum one-piece pitts style cannister muffler (there's a picture of one on chiefaircraft.com's site). Why the step backwards on the engines? I thought the newer version of the engine used the cast muffler?