Actually, what I'm looking for at this point is any support for what I have been saying. As JP said, "You do not need, should not need, code, HIs *CANNOT* *MAKE* anyone do anything.....If the manufacturer wants (however they word it) something to make something work better, *I* am not going to take it upon myself to say it is not needed."

If I can find support, I'll continue to use it. The closest I have come so far is some published general instructions saying that the vertical run should run as far as possible before a bend, and one drawing showing 6" minimum. Nothing re 12".

T

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The only reason some people get lost in thought is because it's unfamiliar territory.
- Paul Fix