Sawtooth: Don't know the answer to your question, but here are a couple of threads on the ESM 74" corsair.
KMP Corsair - same plane, earlier sellerhttp://www.rcuniverse.com/forum/m_7626632/tm.htmESM F4U Buildhttp://www.rcuniverse.com/forum/m_96..._1/key_/tm.htm
Brian