Question on servoe extensions
 

Hello, I'm currently finishing my Avonds F15 and considering using rocket tubes to house the extensions from the tail. I will be using a P80 with a Tam's pipe. Will this be a problem with the heat? With my initial runs of the motor it did not seem to be a problem but I thought I would ask those of you more expierenced in this matter due to this being my 1st jet. Thanks.