With that said, most of the folks that I have seen complaining about YS engines being "touchy" to set up, either "A" - Don't read/follow the directions, or "B" - learned on another make of four stroke engines and so assume any other engine that uses DIFFERENT (note I didn't say more difficult) set-ups and proceedures "must" be trickier to use. I will grant a person that YS engines ARE different to set up, tune, and run, BUT, if used the way they are designed, I have found mine to be every bit as simple to use as my other four strokes.