The broken blade is the least of your worries.
Meaning?
The broken blade is the least of your worries.
You are fiddling with things you are ill equipped to be fiddling with.
the broken blade won't be causing your problems, but you need a qualified engineer to be looking at the boiler.
WB is your best option imo. do you struggle making decisions ?
fair does! for your info WB dont cover the flue in any way shape or form, but will sort the boiler