Tailhook, sorry to hear of your delima!
Steve is probably correct about the servo. I have or have assisted the setting up of four Ventures in the past seven months. We put Gy401 with 9253 combo. All work flawlessly and are still going strong today!!! I am convinced that the 401 and 9253 combo is virtually bullet proof! Don't get me wrong, I love J.R. but I have to fly Futaba on my tail. I personally would not mix J.R. servo with 401
Tailhook, as far as tail flying off, sounds like a Rappy flyer trying to bash the Venture!LOL. Just inspect before you fly! You'll be alright.
Getting ready to put TT.39 in my Venture. It is hard to pull out my faithfull O.S.!!!!
Hope you get back flying soon!!