Nope....I wouldn't do it. There are many options for longer servo arms, with an inexpensive example being like the Du-Bro arms, and an expensive example being the SWB arms. Hitec has longer plastic and metal arms as well. Do a little sniffing around, there are lots of options that would put you in better shape than the adjustable arm you speak of.
....crap, just noticed what forum I was in, sorry for butting in
