I would agree. I left him a comment that mostly covers it.
This:
Thanks, I enjoyed your video. No one I know ever claimed it is the best of the best. It might be the best you can get for under $300. You might want to learn just a little more about the engine before you shoot the next video. This takes nothing away from the enjoyment of watching you having a little fun. The water hopper is not resting on a solid engine block. It has a wet cylinder which dumped all your water into the crank case when you slid the cylinder forward. The mixture was just part adjusted. There is another jet adjustment at the base of the throttle lever. Use a small screwdriver to adjust. The main bearings did not go bad while you ran it. For some reason these guys like to assemble their engines with a slightly undersized crank shaft. The bearings were loose before you started it. All of their engines are loose at the mains like this. Also the mains are needle bearings. When you seized it up you made the mistake of running a fuel mix of 2 gases with no lubricant. It likes to run on Coleman fuel mixed 15 to 1 with Marvel Mystery Oil. Two cycle oil will also work fine. Any other pure gasoline (no methanol) like 100 octane low lead aircraft fuel or fuels designed for yard tools and other small engines. If you mix oil with your fuel, you will not seize it. You also don't need to fill the crank case with oil. A drop of oil on either side of the crank shaft where it meets the bearings and the oil will wick right in instantly. You can put a drop or two on the big end of the connecting rod though the back plate. I drilled a couple holes in the crank cover so I could put a drop of oil on the piston skirt with a needle oiler. You didn't wear out the camshaft either. It did not have a lot of lift to begin with. If anyone is interested in keeping one together, here's my contribution