ORIGINAL: NM2K
Do what it says in the instructions and your engine will be just fine.
You can forget about old glow engine style break-ins when running a gasoline fueled engine initially. While methyl alcohol has little to no lubricity, gasoline has quite a bit, making the initial runs less critical. Just like any other internal combustion engine, do not run it way to lean. A couple hundred rpm (yes - hundred - not thousand) less than peak on the rich side will do the job just fine. If the cowl has been set up properly for a gas engine, there is no real advantage to running the engine without the cowl during flight.
Ed Cregger
Sounds good to me. Pretty much what this guy says is correct. The BS that was going around about using Lawn Girl is H.S. Use a good 2 cycle oil, run it just a little on the rich side. All your doing is trying to seat the ring properly.