schu , I agree , I use your set up (also my set up )on numerous 73" and larger planes , no problems at all .
I agree that all you need is careful placement , carbon supports ect and you will never get flutter or flex . Its that simple .

I like the homemade tail wheel set up , was the total cost under $50.00 ? not to be ignorant , just wonder the cost vs a commerical retract unit