Question: I want to use the 98mm Aeropack Minimum Diameter retainer in the sustainer of my 2 stage rocket. The directions state that the thrust ring should be touching the aft flange of the airframe. I am going to have the motor sticking out of the airframe to use as a coupler. Which puts all of the thrust on the Aeropack. Is it going to hold up to an M motor? Should I reinforce it with a coupler and some pins through the airframe? I thought that was what it was for, but after reading the instructions (I occasionally do that) it looks like it was not meant for that. Opinions? Thanks. Rob