yes and no half the time when i used to remove the links the used to go missing with tenant changes so i now just remove one side so it cant get lost, good boiler worcester 28i junior and yes prob you have a small drip on the heating system just double check all the rad and trv to see if there leaking a bit other than that is under floors (main pipework) and you cant do much about that do something for me plz get a damp cloth/ kitchen towel (it will be binned afterwards) and rub them joints down to remove the green gunk caused by flux