Coolant pipes on cylinder head

[teecee90]

Is it worth trying to clean, repaint and refit these or just replace the damn things? Seriously worried about dislodging all the crap into the valve train as well. Any advice appreciated.

[sirgalahad3]

I took mine​ off, repainted and replaced the o rings and pins.
If left like that till the next service pins will probably break off.
That's what i did anyway.