I ran across this DVD and got it thinking it might help me out since I didn't do a great job of breaking in my first engine. This is a great DVD if you are just learning RC and want to follow the manufacture breaking in procedures because this DVD shows you what is so very vaguely explained in the instruction manual. And more than the breaking-in procedure are tips like the pinch test for setting the mixture which lets you hear the effect it has on the engine. I highly recommend this DVD.