If you haven't already, I'd urge you to study the Utterpower.com website. The CD George B. sells is also well worth the $. This should give you an overview of the state of Listeroid quality or lack thereof. The best way to think of these engines (I'm using George's analogy here) is as a "kit", with all the necessary pieces to make a high quality work engine, similar to the one made by the Lister company of UK fame. In my own opinion, any farmer in the 3rd world can barely afford these engines at their current price. They certainly are familiar with both the original Listers and the Listeroid copies and would know exactly what to do to clean up the engines and make them into a reliable engine prior to operating them. It primarily involves labor, scraping off rust, cleaning out sand, disassembling and reassembling the engine parts, making sure there isn't any sand, bits of iron or curry in places it doesn't belong. Not difficult, and any farmer familiar with these engines could likely do it in the dark with one hand tied behind their back. Don't fall into the common first world mental trap of thinking that the billions of desperately poor farmers of the world are in any way stupid. Ignorant or illiterate perhaps, but certainly not stupid. The truely stupid ones never make it to the point of owning a farm, (unless perhaps they inheirit it, but only the bright ones keep it.) These are third world engines, made to third world standards, but affordable as inexpensive entertainment to wealth North Americans. (Not to criticize anyone on this forum, but most of us are at least wealthy enough to own a computer and afford internet access.) If you begin with an understanding of the primary source and market for these engines, it makes more sense from our perspective why these engines are the way they are. Then you can do your research, chose an engine design that meets your needs, and try to get one from a source that provides the cleanest engine possible. Good luck, these are truely fun to work on, and have tremendous potential if you realize what you are getting. As always, buyer beware, do your homework before giving anyone your cash.
Ray