I completely agree Montynut, I cannot see on what basis Dave is arguing this.
Look, I am not trying to be a dick or to unfairly criticise Dave, but this is a national championship and there are rules that have to be followed whether we agree with them or not.
Let's take noise. Chapter 12 is very clear on the requirement. It sets out the process for measurement. Chapter 18 however does not. It simply states an 'effective' muffler must be fitted. So, by the reasoning in this thread, because chapter 18 does not specify what noise limits apply, we can do what we like so long as the muffler is 'effective'.
How about engine measurement? That is all specified in Chapter 12, not chapter 18. So, on what possible basis will we adjudicate such matters. Clearly not what is in chapter 12.
I just don't see how you can selectively apply the rules depending on what you think is in the spirit of things. Who gets to decide that? The Clerk of the Course? The scrutineer? That's a big charge to put on their shoulders.