Maxxfan dome questions

First off we really do like the small dome fan, understandably there is some noise when a small fan running at those speeds needs to move air.  However, after de-winterizing if turned it on and it is now pretty loud.  Last year I had the issue where the impeller came off, I epoxied it on the shaft and has been good. I went to the roof and removed the cover, the impeller is still good.  Running the fan without the cover and it is still loud.  I then rotated it manually and as it goes around it sounds like a bad bearing is creating the noise.  Also, when I took off the cover the wire that is soldered to the rear of the fuse holder is frayed, looks like it was bent/stressed too much during assembly.

So who do I approach to (hopefully) get a replacement fan?  Maxxfan has a 2 year warranty but do I approach nuCamp for the claim, a dealer or try MaxxFan?  We've only had the 400 for a little over a year.