This is an article I read in Seaplane Pilot this month...
"Seaplane Pilot wishes to provide a service to our members,specifically those who recently paid one-third of a milliion dollars expecting a "pedigree with papers" floatplane that you now realize is a mongrel off the water. Rest assured, your investment in a new Cessna 206 floatplane is still good, and the plane may not be the dog that you are experiencing. Perhaps a few know that the wings on factory floatplanes are larger than their land counterparts. The floatplane wing on the new 206H and T206H is further enhanced - the spar cap stiffener is 25% thicker than on the standard version, engineered to reduce the tendency for cracking at the stress point. Unfortunately, the few who know about this don't work at the Independence, Kansas, Cessna plant. It turns out that about 40 "float" aircraft were installed with the smaller standard right wing and delivered to customers as such. Shhhhh. Cessna has been quietly seeking out affected owners since the error came to light. The information became public on September 11 in Special Service Project SSP00-57-01. We couldn't find any reference on their website (www.cessna.com), so affected owners can only source this document from a Cessna dealer.
If you are experiencing long takeoff water runs or find yourself flying one wing low, you might review your technique, or you could be "wing challenged" - give your Cessna dealer a call. We recommend "Ah, hello, Cessna? I'd like an order of wings please, hold the flaps, and how about throwing in a couple of stiffeners: one for the wing and one for the pilot."