I have a 2002 Toro 286e with a 62" Super Flow System (fabricated) deck. The unit has had very good care (cleaning, etc), but I notice some serious corrosion on the top of the deck around (nearly) every weld associated with the pully support structures. It appears that the welding process changed the metalurgical characteristics of the steel deck structure. Has anyone out there ever experienced this with their SFS decks? Is this common? Thanks!