Installing a Hampton Bay ceiling fan, which is operated by a remote control unit. Wiring appears to be correct. The remote control unit works well when the receiver is loose (i.e. before finishing cover plate is applied), but when the receiver is intstalled in the mounting (according to directions) and the cover plate applied, the remote control unit does not work. Tried redoing all wiring and inserting the receiver in different ways into the mounting, with no success. Any suggestions?