Scott,

The "L" was the last top end pattern engine YS made before the DZ series. It is/was argueably the most powerful of those engines. The 140 "sport" is a detuned version of the same engine.

The sport should have plenty of power to fly the OTOP. Either one is still supported by YS. Pick your poison, you're all set.

I really shouldn't touch on the rest but.....I don't have a lot of common sense

Pattern equipment of any kind is much more specialized and difficult to get than it used to be. It's not as mainstream anymore. Some of the things we want are however, higly sought after by sport flyers. This makes an already small supply very limited. YS is not a huge factory, they are relatively small in comparison. They do make the best 4 stroke pattern engines in the world (in my opinion) and so, well, they can be hard to get. Heck they are hard for ME to get sometimes and I'm a field rep!

I realize you're chomping at the bit and ready to get in there and play. But the "I need it yesterday" approach will never work with modern era pattern equipment. I wish it did work that way, but it's just not the case. Just relax. 2 weeks is nothing in the grand scheme of things. After all this isn't pylon racing

-Mike