Yes .....same problem here....with several contractors having same problem.....celing fans and also bathroom exhaust fans. I just made cutlar hammer aware of this problem 3 weeks ago and have not heard back from them yet !!!!!!! Very serious and interesting problem.......
I spoke with a C-H rep and they are very interested with the 'field' information. If you do not hear back from them in a timely fashion, maybe try contacting them again.