"Mark said: The other argument -- "the stock spoiler is too powerful" -- is sorta like saying "my Maserati has too much braking power"."
Hmmmm.. I had this same conversation with Mark ... My complaint was that the stock spoiler made the elevator less responsive when up due to it disrupting the airflow over the elevator. He agreed. I spit mine by cutting two U's 4 rib bays wide on either side of the center opening were the servo goes, and left a 1/2 wide strip at the leading edge. I reinforced the spoiler halfs with a piece of piano wire.. Works great and uses the 1 stock servo.... Craig