Think NHRA has been made aware of this issue several times, to the point they just posted their rationale recently. See the link...
http://www.nhraracer.com/content/gen...767&zoneid=175
Some of the points are almost laughable but in any case as Billy has said recently and I paraphrase "they try to find ways to keep us away". Sometimes it just seems like we're interfering with their PRO circus.