Hello,im going to explain this as best as i can

I have a plane that is made from plastic and wood ribs throughout the plane. when i went to the field to fly , the instructor noticed my engine was flexing. he told me my firewall was loose.

we removed 3 of the 4 screws . all are srewed into a wood piece behind the firewall with a BLIND NUT at the end. the 4th screw can come out because the nut it spinning with the screw.


2 questions

1. how do i get access to the nut behind the firewall
2. what do i need to beef up the firewall to make it rock solid

im going to get pics soon but see if you can understand it

my plane is an airmaster 40t with a magnum xl .40 engine

thankx