Dear Builders.

I have started a build of my comp arf hawk a couple of years after I bought that kit. This is an awesome thread, however, I am not very clear about a few things . I hope some of your experts can help me.

1- The thrust tube is passing very close to the elevator servo plate. Is it recommended to use some kind of insulator to protect the servos ?. I am using the CARF thrust tube.
2- The thrust tube cone does not fit centered in between the engine mounting rails. Bigger portion of the diameter stays under the rails. Is this OK?
3. With plane upright, should I mount the engine on underside of the rails? ( seems there is no other option if the engine exhaust cone has to center in the thrust tube cone)
4-There is no wooden former to hold the thrust tube in place on tail end. The tube is held in place by the fuselage. Is there a fire risk there due to hot thrust tube ?

thanks in advance