As you can see by clicking the photos, some of the corrosion is on the aluminum and places where we had metal filings dropped during final construction and some of it is just surface rust. However, it is interesting that two bolts in the lower frame have totally different corrosion levels, one red rust the other none.
Note the breather, rusted, the other one not shown is shiny like new???? We will change up all the fasteners except the critical high strength ones for Stainless steel for next August and see what a difference it makes.
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