Replacement of corroded parts under warranty

Bought my Suzuki SV650s brand new in October 2008. Despite regular cleaning and copious amounts of FS365, by March 2009 numerous parts of the bike had corroded (mainly nuts and bolts).

Discussed with dealer, took my bike in for them to look at, they took their photos and sent them off to Suzuki GB, who came back and authorised their replacement.

No reason for replacement given, but dealer admits the replacement of these nuts and bolts (due 17th April) will be like for like – so I can expect the same thing to re-occur in another 5 months time. Me thinks parts are not of “merchantable quality”…