Well, this is not what I wanted to find. I used the balloon method and the manometer method to check the tanks for leaks. I found no rivet leaks in the right skin. That was good. The collars for the locking gas caps were sealed good also; although there was a bubble aroung the locking tumbler which is not serious at all.
The cover plate and sender unit proseal job shows no leaks on the inboard rib area. However, the right tank has a substantial leak under the T905 angle support. I will probably have to remove the cover and check the inside around the angle support backing plate.
Tests on the left tank are not hold more than 3+ hours. Will have to investigate later.
