Slow Arrow I think the video is fuzzy a bit. All the screws are snug. Inside the box the screws that mount engine to it have come loose a couple of times. I run it mostly on white camping gas. I mix about 1/2 to 1 cc of marvels mystery oil with 10 cc of fuel. Or I have used 15 small droplets of 2 cycle oil in 10-11 cc. A 12 cc syringe and needle draws oil and fuel for mixing in a stainless cup. Ronson lighter fuel is good for first fire up or all day too. Not much difference I can tell.