Ercoupe center section repair
Here a few reports on what could go wrong in your planes center section
On the good side, the dreaded Center Section AD requires you to either cut inspection holes on the belly or to disassemble the plane every 3 years or so and inspect with the wings off. If your mechanic has a boroscope, the inspection can be done without taking the wings off, even without inspection panels in the belly.
But best is to take the wings off. That way you can easily see every detail of the center section.
The articles and images here are an example for what to look for and where.
A picture of the center section upside down and without belly skin
Hartmuts finding of a corroded rib
Glen Davids cracked center spar
