Cyrus 6 front panel removal and volume repair

Hi all, I have a Cyrus 6 integrated amp with an erratic volume control (rotary encoder) when used manually. Fine with remote. Can anyone advise on how to remove the front panel of the amp so that I can access the encoder to clean it? It looks like the panel just clips onto the chassis. The encoder is visible from the inside of unit and looks fairly small. It is secured by a nut to the panel. It is also soldered to the circuit board at three points. The encoder has four tabs at the back which look to be the access points to disassemble the unit. Have tried squirting a little contact cleaner into the encoder which has fixed to some extent but not entirely. Many thanks for any help. Glenn