Had a prepurchase performed & have a concern on an aft spar carry-through (spar cap) right side which has a small deformation. My AI says it's airworthy & not really a concern. I would like some feedback on this. Also has a wing tank leak; are these tanks welded or rivited? (I think they're the 9 gal ones) Last but not least; what paperwork is required for the dual nlg fork upgrade? (337?) The plane is a '49 "G" model. Thanks much!
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