Originally posted by Whirley Bird
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THATS STRANGE,
Every trainer from TH (RTF) and that goes for their new bigger one has the steel rod.
The big trainer (RTF) 
Airstrike also has one.
That rod has some weight to it so if your ARF does not have,did you have to add a lot of weight to get the right CG?
Actually, I have the ARF version and not from TH - I bought it from my LHS. I don't know for sure, but from the pictures I've seen of the Metal-Rod version of the wing, the Metal Rod is almost right above the CG, so it wouldn't have much effect, if any.