Hi, having had a new lid replaced by Weber under warranty for my 2013 Spirit S320 I though it best to buy a new regulator and hose and it's not been changed and made be 10 years was a bit long. Following the instructions provided of using 2 spanners (1 to hold, 1 to turn) I just can't get the connection to budge.. Has anyone else experienced this and have any advice? PS: I did apply WD40.