We have three issues with our Osborne tip tanks, Kit No. 35668-1, installed many years ago, and (seemingly) working fine until after the right tip was repaired following damage from a taxiway accident. Mostly, but not always, fuel doesn't flow from the repaired right tip. (2) A tank switch diagram prepared by the A&P who did the recent annual doesn't match the post-initial installation placarding. (3) It's not clear to which tank excess fuel is being returned, depending on which tank(s) are being selected.
We desperately in need of being connected to someone/some shop with enough experience with this installation to help sort out what's going on.
I'm going to attach more extensive information to 'replies' to this posting, as previous attempts to post haven't worked.
Lee Harris, ABS #51432