Good Morning it is obvious you know very little or nothing about Rotax 2 strokes and leaded petrol! It is almost a certainty you will have an engine failure if you use leaded petrol in a 2 stroke due to lead fouling on the spark plugs! Avgas contains several times the amount of lead that even the old 5star had! So based on this fact it maybe fair to suggest that to force 2 stroke Rotax owners to use Avgas would infact be creating a dangerous situation!! Dare I say cause accidents or even fatalities! GO figure!!