Dan,
I think you may have answered one or two of your complaints. I
also think you have had a couple of 'manufacturing defects' that the
company really ought to fix.
Because of where you live, you are going to have corrosion problems
no matter who makes your rotor. About the only simple means of
reducing that corrosion problem is regular maintenance, more regular
than 'normal'?
Two 'duds' in a row is sort of unusual. That tends to tell me that
quality control may not be the 'best' in the woprld, or at least could
be a little better. I'm sure they won't jump for joy with another
complaint, but I certainly think I would complain if it were my rotor!
Good luck.
- 'Doc