chim chimney...

...chim chim cher-ee as Steve the Sweep manhandles 'Fatso's' (yes the pot belly stove is called fatso) main artery which is well and truly clogged.

'Creosote Cancer!' he announced sounding like Darth Vader through the ventilator thingy. No lightsaber but a torch and mirror for peeking up into the flu.
So it's major transplant time with a whole new flue and cap ordered and hopefully installed later this week and a de-coke for Fatso.