I agree with Van's on this one. If you receive any metal parts that are not painted, primed or power coated you should take steps to protect them from rust. Oil or a light coat of grease will protect the part until you are ready to use them. Although our climate is not as damp as Seattle, parts can quickly rust here, at certain times of the year, if they are not tended to.
This appears to be surface rust, of no real consequence and should cause no long lasting issues if you clean and treat as they suggest.
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Tom Martin RV1 pilot 4.6hours!
CPL & IFR rated
EVO F1 Rocket 1000 hours,
2010 SARL Rocket 100 race, average speed of 238.6 knots/274.6mph
RV4, RV7, RV10, two HRIIs and five F1 Rockets
RV14 Tail dragger
Fairlea Field
St.Thomas, Ontario Canada, CYQS
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