My boiler broke this morning and was fixed by tea time! quick and efficient service i would highly recommend! thanks so much for your help! I would suggest that before you go ahead with any of this, simply use a rod to dig through the hole gently the problem for the drain could be as simple as a pile of hair or a button that is blocking your drain clearing the water from the dirt should help with the unclogging many times. Comfort shouldn’t cost a fortune. A clean cutting.