If you have access to a compressor you could consider a descaling tool (i’m no expert).
https://www.machinemart.co.uk/p/clarke-x-pro-cat164-air-needle-scaler--hammer-/
If you have access to a compressor you could consider a descaling tool (i’m no expert).
https://www.machinemart.co.uk/p/clarke-x-pro-cat164-air-needle-scaler--hammer-/