Thank you Brooke - I will 'spell check' my posts a little more carefully next time.
Regards, Bill
Nah, don't worry about anything like that. AH has a spectrum of folks from quite knowledgeable folks to folks who will argue with you until the end of days and won't be convinced even if they are misunderstanding some aspect of aerodynamics and a spectrum of folks from polite to cranky and belligerant.
Just keep in mind that there are many people here who appreciate contributions from folks like you and hope that you enjoy and participate in AH.