DAD, a lot of rules are just simply carried over, I can think of several, that have never been even looked at as to their meaning, or how they can be interpreted, just for example, the "no fuel additives" rule we've had pushed in our faces, this I'll have to say, a lot of organizations have added something to it, rather than left it to carry on, a lot have changed it to read, "upper lube permitted", but no power enhancers, and then they go on to list the most common ones. Upper lube is merely an additive to provide some lubricant to the valves and rings, and resist the corrosive nature of alcohol, in other words, to keep costs down, not to raise horse power, I think we all need to read the rules we run under, and take a look at what the bottom line meaning really is, besides, nitro has gotten so expensive, not many can even afford to ask "how much"! Bob